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PET 聚酯薄膜 PET Polyester film

PET 聚酯薄膜是以聚对苯二甲酸乙二醇酯为原料， 采用挤出法制成厚片， 再经双向拉伸制成薄膜材料。它是一种无色透明、有光泽的薄膜， 机械性能优良， 刚性，硬度及韧性高， 耐穿刺， 耐摩擦， 耐高温和低温， 耐化学药品性、耐油性、气密性和保香性良好， 是常用的阻透性复合薄膜基材之一。但聚酯薄膜的价格较高， 一般厚度为0.12 MM 。 常用作蒸煮包装的外层材料， 印刷性好。

PET polyester film is based on polyethylene terephthalate as raw materials, using the extrusion method into thick slices, and then by made of biaxially oriented film materials. It is a colorless, transparent, glossy film, excellent mechanical properties, stiffness, hardness and toughness of high puncture resistance, friction-resistant, high temperature and low temperature resistance, chemical resistance, oil resistance, good air tightness and keep good tastes, is one of the commonly used gas barrier composite thin film substrate. But the high price of polyester film, General thickness of 0.12 MM. Often used as a cooking outer layer of packaging materials, good printing.

1、 PET 聚酯薄膜基本信息

Basic information of PET polyester film

产品颜色： 透明，乳白色， 蓝色， 黑色， 红色

Color: transparent, white, blue, black, red

厚度： 0.125 MM – 0.35 MM

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Highness: 0.125 mm -0.35 mm

宽度： 1000 MM

Width: 1000 mm

盘带： 10 MM 宽 以上

Width of belt: 10 mm or more

切片： 最大为 1000 MM *900 MM

cutting disc : max is 1000 mm * 900 mm

2、 PET 聚酯薄膜产品结构和性能 Product structure and properties of polyester film PET

PET 聚酯薄膜， 已通过美国UL 认证。 此产品广泛用于电机、包装、印刷、服装和电子等方面。 为广泛的用户提供分切盘带和块带业务。 产品价格按质量等级， 厚度不同划分。

PET polyester film has passed the United States UL certification. This product is widely used in motors, packaging, printing, clothing and electronics, and so on. Provide cutting disc and tape to a wide range of users and business. Product prices by quality level, Division of thickness.

PET 聚酯薄膜的用途 PET Polyester film use

PET 聚酯薄膜具有优异的物理、化学性能及尺寸稳定性、透明性、可回收性， 可广泛的应用于磁记

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录， 感光材料、电子、电气绝缘、工业用膜、包装装饰等领域， 随着特种功能性聚酯薄膜的开发，新的用途不断出现。

PET polyester film with excellent physical and chemical properties and dimensional stability, transparency, can be recycled, can be widely used in magnetic recording, photographic materials, electronics, electrical insulation, industrial films, packaging decoration and other fields, with special development of functional polyester films, new uses continuously goes on.

百科名片

PET 膜又名耐高温聚酯薄膜。 它具有优异的物理性能、化学性能及尺寸稳定性、透明性、可回收性， 可广泛应用于磁记录、感光材料、电子、电气绝缘、工业用膜、包装装饰等领域。 耐高温聚酯薄膜介绍 耐高温聚酯薄膜型号： FBDW , FBSW 耐高温聚酯薄膜规格 厚度 宽度 卷径 卷芯内径 38 *ｕM- 250 *ｕM, 500-1080 MM, 300-650 MM, 76 MM (3”)、152 MM (6”). 注： 宽度规格可依据实际需求生产。膜卷常规长度相当于25ｕM的3000M 或6000M 即是不合格品， 不上流通领域销售。 主要因为是原材料 价格高，一般厂家将其回炉重新作为原料使用， 或者将其作为短纤卖给纺织厂作纺织原料。国外厂家有时也将每季度或每半年的库存薄膜B 级品出售。 此做法是东南亚国家一些厂家的一贯做法， 目的是减少库存。

PET film, also known as heat-resistant polyester film. It has excellent physical properties and chemical properties and dimensional stability, transparency, can be recycled, can be widely used in magnetic recording, photographic materials, electronics, electrical insulation, industrial films, packaging decoration and so on. Introduction to high temperature polyester film high temperature polyester film models: FBDW, FBSW high-temperature resistant polyester film thickness width winding diameter roll core inside diameter specification 38*uM-250*um, 500-1080 mm, 300-650 mm, 76 mm (3 \"), 152 mm (6\"). Note: the width specifications based on

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actual demand. Film regular length 25um 3000m and 6000m is unqualified, not circulation sales. Largely due to high prices of raw materials, generic manufacturers to be melted down again as raw material use, or sell it as a staple to the textile mill for textile raw materials. Foreign manufacturers sometimes quarterly or every six months to stock film of b-products for sale. This approach is the South-East Asia some manufacturers of established practice, the aim is to reduce inventory.

PET 薄膜生产工艺 PET films production technology

生产工艺 production technology

PET 在熔融状态下的流动性较好， 压力对粘度的影响要比温度大， 主要从 压力着手来改变熔体的流动性。

PET good mobility in a molten state, effects of pressure on viscosity than temperature, primarily from pressure to alter the fluidity of molten.

1、 塑料的处理 dealing with the polyester

由于PET 大分子中含有脂基， 具有一定的亲水性， 粒料在高温下对水比较敏感， 当水分含量超过极限时， 在加工中PET 分子量下降， 制品带色、变脆。 因此， 在加工前必须对物料进行干燥， 其温度为150 ℃ 4小时以上， 一般为170℃， 3-4 小时。 可用空射法检验材料是否完全干燥。

Since PET macromolecules that contain fat base, capable of hydrophilic, granular materials at high temperature on the water-sensitive, when the water level over the prescribed limit, PET molecular weight falling in the processing, product color, brittle. Therefore, before processing

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the material must be dry, its temperature to 150 ° c for 4 hours or more, usually 170 ¡æ, 3-4 hours. Available empty method test material is completely dry.

回收料比例一般不超过25%， 且要把回收料彻底干燥。

Regrind ratio no more than 25%, and you want to dry thoroughly recycle material.

2、 注塑机的选用 Choose the Polyester shape machine

PET 由于在熔点后稳定的时间短， 而熔点又较高， 因此选用温控段较多，塑化时自摩擦生热少的注射系统， 并且制品（含水口料）实际重量不能小于机器注射量的2/3。 基于这些要求， 华美达近年开发了中小系列的 PET 专用塑化系统。 锁模力按大于6300t/m2选用。

PET due to the melting point of stability after a short time, and the melting point is higher, so use more temperature control, self friction on plastic injection less heat generation systems, and products (including water) injection of actual weight cannot be less than machinery two-thirds. Based on these requirements, the Ramada in recent years has developed a special plastic system for small and medium-sized family PET. Clamping force is greater than the 6300t/m2 to select.

3、 模具及浇口设计 mould and mouth design

PET瓶胚一般用热流道模具成型， 模具与注塑机模板之间最好要有隔热板， 其厚度为12 mm 左右， 而隔热板一定能承受高压。 排气必须充足， 以免出现局部过热或碎裂， 但其排气口深度一般 不要超过0.03mm, 否则容易飞边。

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The bottle of PET should be used by hot circulation to shape mould, between the mould and shape machine there is a thermal insulation material, whose thickness is about 12 mm, and the thermal insulation material must undertake high pressure. The air emission quantity should be in sufficient, to avoid partial body over-heat or crash, but the depth of the air emission mouth shall not be more than 0.03 mm, and otherwise the mistake will take place.

4、 熔胶温度 temperature of melting polyester

可用空射法量度。 270-295 ℃不等， 增强级GF-PET 可设为 290-315 ℃等。

Available measured by air-launched. 270-295 ° c, high-level GF-PET can be set to 290-315 ° c

5、 注射速度 speed of injection

一般注射速度要快， 可防止注射时过早凝固。 但过快， 剪切率高使物料易碎。 射料通常 在4 秒内完成。

General injection speed should be faster, can prevent premature solidification injection. But too quickly and high shear rates make the material brittle. Injection usually within 4 seconds.

6、 背压 back pressure

越低越好， 以免磨损。 一般不超过100bar, 通常无须使用。

The lower the better, so as not to wear. No more than 100bar, is usually not necessary to use.

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7、 滞留时间 Time for residence

切勿使用过长的滞留时间， 以防止分子量下降。 尽量避免300 ℃以上的温度。 若停机少于15 分钟。 只须做空射处理；若超过15 分钟， 则要粘度PE 清洁， 并把机筒温度降至PE 温度， 直至再开机为止。

Do not use excessively long residence time in order to prevent degradation in molecular weight. Try to avoid more than 300 ° c temperature. If downtime is less than 15 minutes. Simply shorting the firing process; if more than 15 minutes, then to viscosity PE clean and temperature had dropped to PE barrel temperature, up to then start point.

8、 注意事项 attention

（1） 回收料不能太大， 否则易产生在下料处“架桥”而影响塑化。

The recycled material cannot be in too large quantity; otherwise it is easy to make bridge on the material at the lower place and will affect plasticizing.

（2） 如果模温控制不好或料温控制不当， 易产生“白雾” 而不透明。 模温低且均匀， 冷却速度快， 结晶少则制品透明。

If the mould temperature or material temperature cannot control well, it is easy to produce white frog and not transparent. The mould temperature is low and average, and the cooling speed is fast, Crystalline products is less and transparent.

用途 USE

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随着特种功能膜的开发， 聚酯薄膜新的用途也不断出现。 可以生成 手机液晶 薄膜、液晶电视保护膜、手机按键等

With the development of special feature film, polyester film new uses are emerging. Can generate mobile phone LCD film, protective film for LCD TV, mobile phone keys

PET 薄膜是一种性能比较全面的包装薄膜。 其透明性好， 有光泽：具有良好的气密性和保香性； 防潮性中等， 在低温下透湿率下降。 PET 薄膜的机械性能优良， 其强韧性是所有热塑性塑料中最好的， 抗张强度和抗冲击强度比一般薄膜高得多；且挺力好， 尺寸稳定， 适于印刷、纸袋 等二次加工。 PET 薄膜还具有优良的耐热、耐寒性和良好的耐化学药品性和耐油性。 但其不耐强碱； 易带静电， 尚没有适当的防静电的方法， 因此在包装粉状物品时应引起注意。

PET film is a performance comparison of comprehensive packaging film. Transparent, glossy: has good air tightness and keep good smell; Moisture-proof medium, at low temperatures and moisture permeability rates. Excellent mechanical properties of PET film, its strength and toughness is the best in all thermoplastics, tensile strength and impact resistance strength much higher than the General film and very good, stable size, suitable for printing, paper bags and other secondary processing. Also has excellent heat and cold resistance of PET films and good chemical resistance and oil resistance. But they are not resistant to strong base; Static electricity, there is no appropriate static method, so when packing powdered goods should attract attention.

种类 species

（1） PET 高光亮膜 PET HIGH LIGHT BRIGHT film

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该薄膜 具有普通聚酯薄膜优良的物理机械性能外， 还具有极好的光学性能， 如透明度好， 雾度低， 光泽度高， 。 它主要用于高档真空镀铝产品， 该薄膜镀铝后呈镜面， 具有良好的包装装饰效果； 它也可以用于镭射激光防伪基膜等。 高光亮BOPET 薄膜市场容量大，附加值高， 经济效益明显。

The film with ordinary polyester film excellent physical and mechanical properties, also has a very good optical properties, such as transparency, and low haze, high gloss, It is mainly used for high-grade vacuum aluminium-plating products, after the thin aluminized mirrors, with good packaging decorative effect; It can also be used for laser anti-counterfeiting basement membrane, and so on. HIGH LIGHT BRIGHT BOPET film market with high capacity, high added value, economic benefits significantly.

（2） PET 转移膜 PET transfer film

转移膜又称热转印膜， 这种转移膜的特点是拉伸强度高， 热稳定性好，热收缩率低， 表面平整光洁， 剥离性好， 可多次反复使用。 它主要用做真空镀铝的载体， 就是将PET 膜置于真空镀铝后， 涂胶与纸复合， 然后将PET 膜剥离， 铝分子层通过胶粘 作用便转移到纸板表面上， 形成所谓的镀铝卡纸。 镀铝卡纸的生产过程流程是：

Transfer film also known as heat transfer film, this shift film is characterized by high tensile strength, thermal stability, low thermal shrinkage rate and smooth surface smooth, split is good, can be used repeatedly. It is mainly used as vacuum aluminium-plating of the carrier, is placed after the vacuum aluminium-plating of PET film, glue and paper composite and PET membrane peeling, aluminum molecular layer through the adhesive will transfer to the Board on the surface, forming what is called the aluminum-plated paper jams. The production process of aluminum-plated paper jam process is:

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PET 基膜 →离型层 → 色层 → 镀铝层 → 涂胶层 → 转移到卡纸

PET film → the electric separate layer →separate color layer →plating aluminium layer →gluing layer→transfer to the paper board.

真空镀铝卡纸是一种具有金属光泽卡纸， 是近几年发展起来的一种高级新颖包装材料。 这种镀铝卡纸色泽光亮， 金属感强， 印品亮丽高雅， 可以代替印刷品的大面积的烫金， 为商品的美化起到了锦上添花的作用。 由于它采用真空镀铝的方法， 在卡纸表面仅覆盖一层0.25 cm -0.3cm , 薄薄而又紧密光亮的铝层， 仅是裱铝卡纸铝箔层的1/500， 这样它既有高贵美观的金属质感， 又具有可降解， 可回收的环保属性， 是一种绿色包装材料。 江苏中达通过配方和工艺调整， 于05 年开发成功并大批量投放市场， 收到很好的经济效益。

Vacuum aluminium-plating paper jams is a paper jam with gloss, is an advanced new packaging materials developed in recent years. This aluminium-plating paper jam with bright color, metal sense of strong, beautiful elegant prints, you can replace print large area bronzing, to beautify an icing on the part of the goods. Because it uses vacuum aluminium-plating method, the card surface is covered with a layer of only 0.25 cm-0.3cm, thin and tight shiny aluminum layer, are mounted on aluminium paper jam foil layer one-five hundredth only, so it has both noble in appearance of the metal texture, and biodegradable, recyclable green properties, is a kind of green packaging materials。 Jiangsu zhongda developed the products’ craft and process, and produced in a large quantity into market in 05, and obtained good revenue.

（3） PET 反光膜 PET reflect light film

PET 反光膜的特点是薄膜具有优良的光学性能， 表面平整、光洁， 热稳定性好， 收缩率小、耐光老化。

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PET characteristics of reflective film is film has excellent optical performance, surface smooth, smooth and good heat stability, shrinkage of small, aging light.

交通设施中所用反光材料有透镜型定向反光膜和平顶型反光膜两种， 他们都是使用镀铝的PET 薄膜做反光层， 在其上涂有压敏胶后将折射率为１.９若干玻璃微珠粘附在PET 镀铝膜上， 然后再喷一层缩丁醛表面保护层即成。

Reflective material used in the transport facilities have lens-type reflective film peace-reflective film two, they are made reflective aluminized PET film layer, on which there is a pressure-sensitive adhesive refraction rate of 1.9 per cent after a number of glass bead-glued on the PET aluminum-plating membrane, and then sprayed an butyral surface layer of protection is needed.

PET 反光膜应用于有反光要求的广告牌、交通反光标志 （反光路标、反光隔离带、反光车号牌）、反光警服、工业安全标志等。

PET reflective film applied to reflective billboards, traffic required by reflective markers (reflective road signs, safety belt, reflective car license plate), reflective police uniforms, industrial safety signs.

（4） 化学涂布膜 Chemical coating film

为了提高PET 薄膜的表面性能， 以改善印刷的适应性和真空镀铝层的结合力， 通常采用电晕处理的方法来提高薄膜的表面张力。 但是， 电晕法存在时效性等问题， 特别是在高温、高湿的环境里， 电晕处理后的薄膜张力很容易衰减。 然而化学涂布法则不存在这样的问题；故受到印刷业和镀铝业 的青睐。 江苏中达已开发PET化学涂布系列产品：如用水溶性聚合物涂布， 可提高ＰＥＴ 薄膜的表面

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张力；用丙烯酸酯类乳液涂布，可改善印刷的适应性 （可使用水溶性油墨）；采用聚氨酯水溶液涂布， 能加强镀铝层与PET基膜的结合力， 并可增加镀铝层厚度。

In order to improve the surface properties of PET film in order to improve the adaptability of printing and the combination of vacuum aluminum plating layer, usually corona treatment approaches to improve the surface tension of the film. However, Corona law issues such as timeliness, especially in an environment of high temperature, high humidity, after corona treatment film tension can easily attenuation. However the chemical coating rule is not such a problem exists, so favored by the printing industry and the aluminum industry. Jiangsu zhongda chemical coating developed PET products: water soluble polymer coating can improve PET film surface tension; application of acrylate emulsion coating can improve the adaptability of printing (using water soluble inks); introduction of aqueous polyurethane coating, can strengthen and PET-based films for aluminum coating adhesion and increased aluminum-plating layer thickness.

另外，采用涂布法还可制得高阻隔膜和抗静电膜等。

In addition, the law may also have high barrier coating film and antistatic film.

（5） PET 抗静电膜 PET antistatic film

当今世界已进入信息化时代，各种频率，波长的电磁波充满整个地球空间，这些电磁波会对未经屏蔽的敏感性电子元件、电路板、通信设备等会产生不同程度的干扰， 造成数据失真、通信紊乱。 而电磁感应和摩擦产生的静电对各种敏感元件、仪器仪表、某些化工产品等，如因包装薄膜静电积累产生高压放电， 其后果是破坏性的， 所以开发抗静电PET包装薄膜也很重要。 抗静电薄膜的特点是通过在 PET薄膜中加入某种抗静电剂， 使薄膜表面形成一层极薄的导电层， 并形成连续相， 提高表面导电性能， 使产生的的电荷尽快泄漏。 一般要求抗静电膜的表面比电阻≤109-110 欧姆。

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In today's world has entered the information age, various frequencies, wavelengths of the electromagnetic waves fill the space of the Earth, without these electromagnetic waves shielding sensitive electronic components, circuit boards, communications equipment, and so will have varying degrees of interference, result in distortion of data, communication disorders. Electromagnetic induction and friction resulting electrostatic sensitive components, instrumentation, certain chemical products such as, as a result of packaging thin film accumulation of electrostatic high-voltage discharges, the consequences are devastating, the development of antistatic PET packaging film is also important.

Antistatic films are

characterized by joining some sort of antistatic agent in the PET film, forming a very thin layer of conductive layer on thin film surface and form a continuous phase, improve surface electrical conductivity, the resulting charge leaks as soon as possible. General requirements for surface resistivity of antistatic film ≤ 109-110 ohms.

（6） PET 热印膜 PET Hot print film

普通 PET 属于结晶性聚合物，PET 薄膜经过拉伸取向后， 会产生较大程度的结晶， 如对其进行热封的话， 会产生收缩变形， 故普通的PET 薄膜不具备热封性能。 PET 薄膜在用做商品包装时， 为解决其热封口问题， 通常采用将BOPET 薄膜与PE 薄膜或CPP 薄膜进行复合的方法， 从而在一定程度上了BOPET薄膜的应用。

General PET belongs to the crystalline polymer, after stretching orientation of PET film, will have a greater degree of crystallization, such as its heat seal will produce shrinkage deformation, so the General does not have the sealing properties of PET film. PET film used for the packing of goods, to solve their hot-sealing problems, usually using BOPET films and methods for composite PE film or CPP film, which to a certain extent, limit the application of BOPET film.

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为了解决热封问题， 通过对PET 树脂的改性， 并且采用A/B/C 三层结构的模头， 现已开发出三层共挤的热封型PET 薄膜， 这种热封型PET 薄膜由于有一面 是可热封合， 使用十分方便。 热封性PET 薄膜可广泛应用于各种商品的包装和护卡膜等领域。

In order to address the sealing problems, through the modification of PET resin, and A/B/C three-tier structure of the die, now has developed a three-layer co-extrusion of heat seal type PET film, this heat seal type PET film as is hot-sealing on one side, very easy to use. Sealing PET film can be widely used in various areas of commodity packaging and protecting card film

（7） PET 热收缩膜 PET HOT SHRINGKAGE FILM

聚酯热收缩膜 是一种新型热收缩包装材料。 由于它具有易于回收、无毒、无味

机械性能好、特别是符合环境保护等特点， 在发达国家聚酯 （PET） 已成为取代聚氯乙烯 (PVC)热收缩薄膜的理想替代品。

PET Hot shrinkage film is a new type of condensed packaging material. Because it is easy to be collected back after being used, non-poisonous, non-taste, good statics capacity, and environment friendly, the PET has become substitute of PVC in hot condensed film in developed countries.

但是， 普通聚酯是结晶型高聚物， 普通PET 薄膜经过加工特殊工艺处理只能得到30% 以下的热收缩率。 若要获得更高热收缩率的聚酯薄膜也必须进行改性。 也就是说， 为了制备高热收缩率的聚酯薄膜， 需要对普通聚酯即聚对苯二甲酸乙二醇酯进行共聚改性。 共聚改性后的PET 薄膜其最高热收缩率可高达 70%以上。

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However, ordinary polyester crystalline polymers, ordinary PET film processed special process can only be less than 30% thermal shrinkage. To get more high heat shrinkage of polyester films must also be modified. Say, preparation to high thermal shrinkage of polyester film needs to ordinary polyester or polyethylene terephthalate copolymer modification. Copolymerization modification of PET film after its maximum thermal shrinkage can be as high as 70%.

热收缩型聚酯薄膜的特点：它在常温下稳定， 加热时（玻璃化温度以上）收缩， 并且是在一个方向上发生了 70%以上的热收缩。

The characteristics of heat shrinkage polyester film: it keeps stable in normal temperature, being shrinkage when adding heat (above glass transition temperature) and the shrinkage rate is more than 70% in one direction.

热收缩聚酯薄膜包装的优点是；

The advantages of heat shrinkage polyester film are:

（１） 贴体透明，体现商品形象。

Easy to be shaped, Transparent, it can reflect the image of products.

（２） 紧束包装物， 防散性好。

It is Being Tight to package products, resistant to leak.

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（３） 防雨，防潮， 防霉。

It is being Rain proof, moisture proof, mildew proof.

（４） 无复原性， 有一定仿伪功能。

No resilience, a certain pseudo-like features.

热收缩聚酯薄膜常用于方便食品、饮料市场、电子电器、金属制品， 特别是收缩标签是其最主要的应用领域。 因为随着PET 饮料瓶 的快速发展， 如可乐、雪碧、各种果汁等饮料瓶都需要PET 热收缩膜与之配套做热封标签， 它们同属于聚酯类， 是环境友好材料， 易于回收再生利用。

Heat-shrinkable polyester film often used for convenient food and beverage market and electronic appliances, metal products, particularly of shrink labels are the most important application area. With the rapid development of PET beverage bottles, such as coke, sprite, drinks such as fruit juice bottles require PET heat shrinkable film with them doing the sealing label, they both belong to polyester, is environment friendly materials for easy recycling.

热收缩聚酯薄膜除了用做收缩标签外，近年来也开始用于日用商品的外包装上。 因为它既可保护包装物品避免受到冲击， 防雨、防潮、防锈，又能使产品以印刷精美的外包装赢得用户， ， 同时它能很好地展示了生产厂家的良好形象。 目前， 越来越多的包装厂家采用印花收缩薄膜来代替传统的透明薄膜。 因为印花收缩薄膜可以提高产品的外观档次， 有利于产品的广告宣传， 可使商标品牌在消费者心中产生深刻的印象。

Heat-shrinkable polyester film apart from use as shrink labels, in recent years have also begun on the outer package for general merchandise. Because it can be protective items to

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avoid shock, waterproof, moisture-proof, rust-proof, it also enabled product with printed packaging to gain users, and while it's very good for showing the manufacturer's good image. At present, more and more manufacturers use packaging printed shrink film to replace the traditional transparent film. Because printed shrink film can improve the appearance of the product grades, in favour of product advertising allows brands to have a deep impression on the minds of consumers.

聚酯薄膜 Polyester film

聚酯薄膜是以对苯二甲酸乙二醇酯为原料， 采用挤出法制成厚片， 再经双向拉伸制成的薄膜材料。 同时， 是一种高分子塑料薄膜， 因其综合性能优良而越来越受到广大消费这的青睐。 由于我国目前的生产量和技术水平仍不能满足市场的需求， 部分仍需依靠进口。 它是一种无色透明、有光泽的薄膜， 机械性能良好， 刚性、硬度及韧性高， 耐穿刺、耐摩擦、耐高温和低温、耐化学药品性、耐油性、气密性和保香性良好，是常用的阻透性复合薄膜基 材之一。 但聚酯薄膜价格较高， 一般厚度为12mm, 常用作蒸煮包装的外层材料， 印刷性好。 更由于聚酯薄膜的复杂性和难判断， 给海关的监管带来不少的困难。 为此， 我们就聚酯薄膜的商品知识和目前进口过程中出现的有关问题向有关专业公司进行了解。

Polyester film is terephthalate-raw materials, using the extrusion method into thick slices, and then by made of biaxially oriented film materials. At the same time, is a polymeric film, more and more because of its comprehensive performance by the majority of consumers of all ages. Due to the production and technology in China is still unable to meet the needs of the market, some still need to rely on imports. It is a colorless, transparent, glossy film, good mechanical properties, high rigidity, hardness and toughness, puncture resistance, rub resistance, high temperature and low temperature resistance, chemical resistance, oil resistance, good air tightness and keeping normal smell, is one of the commonly used gas barrier composite thin film substrate. Polyester film costs more general thickness of 12mm, often used as a cooking

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outer layer of packaging materials, printing and good. Complexity and difficult to determine due to polyester film, brings many difficulties to customs supervision. To this end, our product knowledge and currently imports of pet film in the process of understanding issues related to the company that appear.

一、 根据生产聚酯薄膜的用料和生产工艺分类

Material and production technology

根据生产聚酯薄膜所采用的原料和拉伸工艺不同可分为以下两种：

It can be specified as the following two kinds according to raw material and pull technology:

1、 双向拉伸聚酯薄膜（简称BOPET）, 是利用有光料（也称为大有光料，即是在原材料聚酯切片中添加钛白粉， 经过干燥、熔融、挤出、铸片、和纵横拉伸的高档薄膜， 用途广泛。 BOPET薄膜具有强度高、刚性好、透明、光泽度高、刚性好、无嗅、无味、无色、无毒、突出的强韧性；其拉伸强度是PC 膜、尼龙膜的3 倍， 冲击强度是BOPP膜的3-5倍， 有极好的耐磨性、耐折叠性、耐针孔性和抗撕裂性；热收缩性极小处于120 & DEG: C 下， １５分钟后又收缩1.25%, 具有良好的抗静电性，易进行真空镀铝， 可以涂布PVDC，从而提高热封性、阻隔性、和印刷的附着力；BOPET还具有良好的耐热性、优异的耐蒸煮性、耐低温冷冻性， 良好的耐油性和耐化学品性等。 BOPET薄膜除了硝基苯、氯仿、苯甲醇外，大多数化学品都不能使它溶解。 不过， BOPET会受到强碱的侵蚀， 使用时应注意。 BOPET 吸水率低， 耐水性好， 适宜包装含水量高的食品。

Biaxially oriented polyester film (BOPET for short), is the use of light materials (also known as optical material, that is, adding titanium dioxide materials polyester chips, after drying, melting, extrusion, casting, and vertical and horizontal stretch of high grade films, a wide range of uses.

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BOPET film has strength high, and rigid good, and transparent, and gloss of high, and rigid good, and no olfactory, and tasteless, and colorless, and nontoxic, and highlight of strong toughness; its stretch strength is PC film, and nylon film of 3 times, impact strength is BOPP film of 3-5 times, has very good of wear-resistant sexual, and resistance collapsed characteristic, and resistance pinhole characteristic and anti-tear characteristic; hot contraction characteristic minimal is 120&DEG:C lower, after 15 minutes only contraction 1.25%, has good of antistatic characteristic, easy for vacuum plating aluminum, can coated cloth PVDC, Increase of heat seal, barrier properties, and printing of adhesion; BOPET also has good heat resistance, excellent resistance to cooking, freezing resistance, good oil resistance and chemical resistance and so on. BOPET film in addition to nitrobenzene methanol, chloroform, benzene, most of the dissolved chemicals can make it. However, BOPET is eroded by the strong base, used for attention. BOPET low water absorption, good water resistance, suitable for packing food with high water content.

2、 单向拉伸聚酯薄膜（简称CPET）, 是利用半消光料（原材料聚酯切片中没有添加钛白粉）， 经过干燥、熔融、挤出、铸片和纵向拉伸的薄膜， 在聚酯薄膜中的档次和价格最低， 主要用于药品片剂的包装。 由于使用量较少， 厂家较少大规模生产， 大约占聚酯薄膜领域的５％ 左右， 我国企业也较少进口， 标准厚度有150 ｕm.

Uniaxial tensile polyester film (CPET for short), is the use of semi-matting materials (raw materials polyester chips without adding titanium dioxide), after drying, melting, film extrusion, casting and vertical stretch, at the lowest level and price of polyester films, mainly for the packaging of pharmaceutical tablets. Use less, manufacturers of less mass production, roughly around 5% of polyester film field, fewer imports of Chinese enterprises, the standard thickness of 150 UM.

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二、 根据聚酯薄膜的用途分类：According to the polyester film use: According to the polyester film use:

由于聚酯薄膜的特性决定了其不同的用途。 不同用途的聚酯薄膜对原料和添加剂的要求以及加工工艺都有不同的要求， 其厚度和技术指标也不一样； 另外，只有BOPET 才具有多种用途， 因此根据用途分类的薄膜都是BOPET。 可分为以下几种：

Due to the nature of polyester film has a different purpose. Different uses of polyester film for raw material and additive processing technology has different requirements and demands, the thickness and specifications are not the same; In addition, only the BOPET has multiple uses, therefore according to the use of the film are BOPET. Can be divided into the following:

１、 电工绝缘膜。 由于其具有良好的电器、机械、热和化学惰性， 绝缘性能好、抗击穿电压高、专用于电子、电器绝缘材料、常用标准厚度：

Electrical insulation film. Due to its excellent electrical, mechanical, thermal and chemical inertia, good insulation properties, high resistance to breakdown voltage, dedicated to the electronics, electrical insulation materials, commonly used standard thickness:

25ｕm、36ｕm、40ｕm、48ｕm、50 ｕm、70 ｕm、75ｕm、80ｕm、100ｕm和125 ｕm. 其中包括电线电缆绝缘膜(厚度为25ｕm-75ｕm )和触摸开关绝缘膜（50 um-75 um）.

25ｕm、36ｕm、40ｕm、48ｕm、50 ｕm、70 ｕm、75ｕm、80ｕm、100ｕand 125 ｕm. in which: electric wine and electric cable isolative film (thickness 25ｕm-75ｕm) and switch isolative film (50-75 um).

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２、 电容膜。 具有拉伸强度高、介电常数高，损耗因数低，厚度均匀性好、良好的电性能、电阻力大等特点，已广泛用于电容器介质和绝缘隔层。

Capacitor film. With high tensile strength, high dielectric constant, low dissipation factor, good thickness uniformity, good electrical properties and electrical characteristics such as resistance, media has been widely used in capacitors and insulated insulating layers.

常用标准厚度3.5 um、3.8 um、4 um、4.3 um、4.8 um、5 um、6um、8um 、9 um、9.8um、10 um、12 um。

Normal standard thickness : 3.5 um、3.8 um、4 um、4.3 um、4.8 um、5 um、6um、8um 、9 um、9.8um、10 um、12 um.

３、 护卡膜。 具有透明度好、挺度高、热稳定好、表面平整优异的收卷性能、均匀的纵横向拉伸性能、并具有防水、防油和防化学品等优异性能。 专用于图片、证件、文件及办公用品的保护包装， 使其在作为保护膜烫印后平整美观，能保持原件的清晰和不变形。

Protection card films. Good transparency, high stiffness, good thermal stability, excellent rolling properties, uniform smoothness of surface longitudinal tensile properties, and waterproof, oil proof and anti-chemicals, and other outstanding performance. Dedicated to the protection of photographs, documents, files, and office supplies packaging, make it as a protective film formed beautiful after hot stamping, which maintains a clear and no distortion of the original.

常用标准厚度有：10.75 um、12um、15 um、25 um、28 um、30 um、36 um、45um、55um、65um、70um， 其中15 um以上的主要作为激光防伪基膜或高档护卡膜使用。

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Normal standard thickness: 10.75 um, 12 um, 15 um, 25 um, 28 um 30 um, 36 um, 45 um, 55 um, 65 um, 70 um. In which, for more than 15 um is for legal protective film or high class card protective film.

４、 通用膜。 具有优异的强度和尺寸稳定性、耐寒性、及化学稳定性、广泛用于复合包装、感光胶片、金属蒸镀、录音录像等各种基材。 具体有以下几种：

Universal film. With excellent strength and dimensional stability, cold resistance, and chemical stability, widely used in composite packaging, photographic films, various base materials such as metal evaporation, audio and video recording. There are several specific:

① 半强化膜。 最主要的特点是拉伸强度大、在较大的拉力下不易断裂， 主要适合高温加工过程中尺寸变化小或作为转移载体的用途上。

Semi-membrane. The main characteristic is great tensile strength, in full is not easy to break under, mainly for high temperature and dimensional changes during the processing of small or as carrier of transfer purposes.

常规标准厚度为 20um、28 um、30 um、50um .

Normal standard: 20 um, 28um, 30 um, 50 um.

②烫金膜。最大特点是拉伸强度和透明度好， 热性能稳定、与某些树脂的结合力低。 主要适合高温加工过程中尺寸变化小或作为转移载体的用途上。常规标准厚度为9 um 、12 um、15 um、19 um、25 um、36 um.

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Hot stamping films. The biggest characteristics of tensile strength and good transparency, thermal stability, low in conjunction with some resin. Used mainly for high temperature and dimensional changes during the processing of small or as carrier of transfer purposes.

Normal standard thickness: 9 um, 12 um, 15 um, 19 um, 25 um, 36 um.

③印刷复合包装膜。主要特点是透明性好、抗穿击性佳、耐化学性能优越、耐温、防潮。使用于冷冻食品及食品、药品、工业品、和化妆品的包装。

Printing compound packaging film. Main features are transparent, better wear hammer resistance, superior chemical resistance, temperature resistance, moisture-proof. Used for frozen foods and packaging of food, medicines, industrial products, and cosmetics.

常规标准厚度： 12 um、15 um、23 um、36um.

Normal standard thickness: 12 um, 15 um, 23 um, 36 um.

④镀铝膜。 主要特点是强度高、耐温和耐化学性能好、有良好的加工及抗老化性能、适当的电晕处理，使得铝层和薄膜的附着更加牢固。 用于镀铝后，可广泛用于茶叶、奶粉、糖果、饼干等包装，也可作为装饰膜如串花工艺品、圣诞树；同时还适用于印刷复合或卡纸复合。

Aluminum plating film. Featuring high strength, good resistance to temperature and chemical resistance, good processing and aging resistance, appropriate Corona, makes aluminum coating and thin film attached more securely. After aluminum, can be widely used in tea, powdered milk, confectionery, biscuits and other packaging, can also be used as decorative films such as mix in species crafts, Christmas tree; also apply to printing paper jam composite or

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compound.

常规标准厚度有12um、16um、25 um、36 um。

Normal standard thickness: 12 um, 16 um, 25 um, 36 um.

⑤磁记录薄膜。 具有尺寸稳定性好，厚度均匀， 抗拉强度高等特点。 使用于磁记录材料的基膜和特殊包装膜。 包括录音带基 （常用标准厚度有9-12 um）和黑色膜 （常用标准为35-36 um）.

Magnetic record film. With stable size, average thickness, high strength of anti wear, the magnetic record film is used for base film and special packaging film. Including record tape film, (normal standard thickness 9-12 um,) and black film (normal standard thickness 35-36 um.)

５、 纳米PET 薄膜 Nano PET film

高的透明度和光泽度:纳米粒子粒径在1-100 um之间，小于可见光的波长， 对薄膜透明度影响较少。

High transparency and gloss: Nano-particle size between 1-100 UM, less than the wavelength of visible light, less impact on the film's transparency.

高的阻隔性能和耐热性能：利用具有特殊性能的纳米材料和独特的加工工艺， 使纳米材料呈纳米尺寸均匀分散PET基体中， 在薄膜生产中通过拉伸取向， 从而使PET 薄膜呈现极优异的阻隔性能, O2、 CO2、H2O透过率成倍下降， 耐热性能也大副度提高， 可扩大PET 的应用领域， 大大延长被包装物的货架寿命， 还可以用于需热灌装或消毒杀菌的场合。

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High of barrier performance and heat-resistant performance: using has special performance of nano-material and unique of processing technology, makes Nano-material is Nano-size uniform dispersed PET matrix in the, in film production in the through stretch orientation, to makes PET film rendering very excellent of barrier performance, O2, and CO2, and H2O through rate multiplied fell, heat-resistant performance also Chief Officer of improve, may expanded PET of application area, greatly extended was packaging property of shelf life, also can for required hot filling or disinfection sterilization of occasions.

Yan Rebecca zhou

8 Sep. 2011

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