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    保護膜按照用途可以分為數(shù)碼產(chǎn)品保護膜，汽車保護膜，家用保護膜，食品保鮮保護膜等。隨著手機等數(shù)碼產(chǎn)品在中國的普及，保護膜已經(jīng)慢慢的成為的一種統(tǒng)稱，而其在屏幕保護膜領域的功能也是五花八門，***早高清防刮，到現(xiàn)今香港glauke, 

180 度和ok8功能型保護膜的受寵。材料從***早的pp材料到現(xiàn)今流行的ar材質，中間經(jīng)歷了5年多的發(fā)展，慢慢的被廣大手機群體所接受。保護膜按應用范圍分，可應用在以下一些領域:金屬產(chǎn)品表面、涂層金屬產(chǎn)品表面、塑料產(chǎn)品表面、汽車產(chǎn)品表面、電子產(chǎn)品表面、標牌產(chǎn)品表面、型材產(chǎn)品表面、及其它產(chǎn)品表面。pet材質

保護膜是市面上***常見的一種保護貼，手機和平板電腦用的就是這三層pet保護膜。化學名為聚脂薄膜。特點是質地比較硬，較耐刮，長時間使用也不會像pvc材料那樣翻黃出油 。但是一般pet的保護膜都是依靠靜電吸附的，比較容易起泡和脫落，不過即便脫落了在清水中洗一下還可以重復使用。pet材質保護膜的價格比pvc的貴不少。采用pet 物料保護貼貼做工與包裝比較精美，有專門為熱買手機型號來訂做的保護貼，不需要裁剪即可直接使用。

ar材質

保護貼則是市面上已知的的一種屏幕保護貼。ar是一種合成材質，一般分三層，硅膠為吸附層，pet為中間層，外層為特殊處理層.特殊處理層一般又分成兩種，ag處理層和hc處理層，ag是抗眩光處理，磨砂型保護膜就是采用了這種處理方式。hc是硬度處理，是高透光型保護膜所用的處理方式.這種屏幕保護膜的特點是屏幕不反光，透光度高 (95％以上)，不會影響屏幕的顯示效果。材質表面經(jīng)過特殊的工藝處理，本身質地較柔軟，具有抗摩擦與抗刮能力強.長時間使用也不會出現(xiàn)刮痕，黏貼上采用化學材質硅膠吸附在上，因此不會對屏幕本身造成傷害，撕下后不會留下印記，而且也能夠清洗過后重復使用。價格較pet材質貴。

pe材質

主要原材料是 ，材質比較柔軟，有一定的拉伸性。一般厚度為0.05mm-0.15mm,其粘性根據(jù)使用要求不同從5g-500g不等(粘性方面國內和國外劃分不同，比如韓國膜的200克相當于國內的80克左右)。pe材質的保護膜項目下分還有靜電膜、網(wǎng)紋膜等。靜電膜就是以靜電吸附力為粘力，是完全沒有膠水的一種保護膜，當然粘性相對較弱，主要應用于電鍍等表面保護。網(wǎng)紋膜就是表面有很多網(wǎng)格的一種保護膜，這種保護膜透氣性比較好，粘貼效果比較美觀，不像平紋膜會留下氣泡。

    opp的保護膜從外觀上看比較接近于pet保護膜，其硬度較大，有一定的阻燃性，但是其粘貼使用效果較差，一般市場上很少使用。

    oca材的保護膜從外觀上看跟其它的材質沒有什么區(qū)別，但是oca材質的保護膜是生產(chǎn)于日本，其現(xiàn)在在蘋果手機上應用***多，其在光度與硬度上都比其它的材質好，所以oca是現(xiàn)在手機保護膜***流行的材質。

貼膜分類

1、按性質類:涂膠膜、自粘膜

1)、涂膠膜粘著劑  的種類有溶劑  型橡膠粘著劑  、溶劑  型丙烯酸  粘著劑  、水性丙烯酸  粘著劑  、以及硅酮    粘著劑  。其中又以水性丙烯酸  粘著劑  是***普遍應用此類產(chǎn)品，它可容易調整粘著力，并且透明性和耐候性佳。

2)、自粘膜一般是以共擠的方式生產(chǎn)，而其自粘層一般為eva、超低密度聚乙烯或聚烯烴塑性體樹脂為主，此種結構形式亦漸漸成為市場的主流，因為它較涂膠膜具有較多的優(yōu)點，如無殘膠、提供穩(wěn)定的粘著力、降低使用者成本以及對保護膜制造商創(chuàng)造較高利潤。

2、按膠系分類

橡膠系:天然橡膠、丁苯  橡膠、;

橡膠系保護膜特點:柔軟，能較快達到***終粘性;分子流動性好;相對易撕;天然橡膠耐老化性能差;價格較高。

系:乳液型(水性)、溶劑  型;

丙烯酸  酯類膠系保護膜特點

1)、乳液型丙烯酸  (水性丙烯酸  ):流動性相對較差，達到***終粘性時間相對較長，低檔保護膜粘性會隨時間的增長而增加粘性，環(huán)保性材料，耐候性較好，可快速撕膜;

2)、溶劑  性丙烯酸  :難以達到高要求的環(huán)保標準，其他特性與乳劑  性丙烯酸  類似。

3、按基材分類

pe基材、pvc基材、pet基材、opp基材、其他

4、按保護膜市場分類

1)、傳統(tǒng)保護膜:如鍍鋅鋼板保護膜、彩色鋼板保護膜、玻璃板或塑料片材保護膜等。此類傳統(tǒng)保護膜多屬附加價值較低之應用，對性能及晶點要求較低，且多為涂膠型保護膜。

2)、平面顯示器用保護膜:應用范圍包括平面顯示器、tft-lcd 模塊、背光模塊、玻璃基板及各種光學組件如偏光板、彩色濾光片等。此類保護膜對粘度及晶點的控制有極高的要求，屬高附加價值、高技術門坎之應用。

3)、高科技電子業(yè)用保護膜:如干膜(dry

film) 用或晶圓研磨制程所用之保護膜。此類保護膜通常需要于無塵室內生產(chǎn)，且對晶點的要求極為嚴苛。僅有極少數(shù)保護膜廠商具備足夠的技術能力來達到這些要求

the protective film can be divided into digital 

protective film, automobile protective film, household protective film【敏感詞】food

preservation film.

with the popularity of cell phones【敏感詞】other

digital products in china, protective film has slowly become a kind of generally

referred to as the screen protective film,【敏感詞】its function in the field of

screen protection film is multifarious, the earliest gao qingfang scraping, to

hong kong today glauke, 180 degrees【敏感詞】favored ok8 functional protective

film.

materials from the earliest pp materials to

today's popular ar materials, in the middle of more than five years of

development, slowly being accepted by the majority of mobile phone

groups.

protective film according to the range of

application, can be used in the following areas: metal products surface, surface

coating of metal products, plastic products, automotive products, electronic

products surface, surface surface sign product, product surface profiles,【敏感詞】

other products surface.

folding

pet material

the protective film is the most common type of

protective paste on the market,【敏感詞】the phone【敏感詞】tablet are used in this

three-layer pet protective film.

the chemical called polyester film.

the characteristic is texture is more hard,

more resistant to scraping, long time use also won't be like pvc material to

turn yellow oil.

but general pet's protective film relies on

electrostatic adsorption, it is easy to bubble【敏感詞】fall off, but even if it

falls off in clean water can be reused.

the protective film of pet material is much

more expensive than pvc.

the pet material protection paste is made of

fine workmanship【敏感詞】packaging, which is specially designed for the hot purchase

of mobile phone models, which can be used directly without cutting.

folded ar material

the protective paste is the best known screen

saver on the market.

ar is a kind of synthetic material, generally

three layers, the silica gel adsorption layer, pet for the middle layer, outer

layer for special treatment. special processing layer is usually divided into

two kinds, ag processing layer【敏感詞】hc, ag is anti glare processing, grinding

sand mold coating is adopted this approach.

hc is hardness processing, high transmission

type protective film used in the treatment. the characteristics of this kind of

screen protection film is not reflective screen, high light transmittance (95％),

will not affect the screen display effect.

material surface through special craft

processing, itself a soft texture, has a strong resistance to friction【敏感詞】

scratch resistance. used for a long time also won't appear scratches, paste on

the chemical material silica gel adsorption on a mobile phone screen, so as not

to harm the screen itself, tear off after won't leave a mark, but also can be

reused after cleaning.

the price is more expensive than the

pet.

folded pe material

the main raw material is lldpe, which is soft

and has a certain stretch.

generally, the thickness is 0.05mm - 0.15mm,

and the viscosity varies from 5g to 500g depending on the use requirement. (the

viscosity is different from domestic【敏感詞】foreign, for example, 200 grams of

korean membrane is equivalent to about 80 grams of domestic product).

the protection film of pe material is divided

into the electrostatic film, the mesh film【敏感詞】so on.

electrostatic film is a protective film with

electrostatic adsorption, which is completely without glue, which is of course

relatively weak【敏感詞】is mainly used for surface protection such as

electroplating.

the diaphragm is a protective film with many

meshes on the surface. the protective film has a better air permeability【敏感詞】is

more beautiful than the plain film.

folding opp material

the protective film is relatively close to the

pet protective film,【敏感詞】its hardness is larger. it has certain flame

retardancy, but its paste is less effective【敏感詞】is seldom used in general

market.

folding oca material

the protective film from the appearance to see

no difference with other material, but the oca material protective film is

produced in japan, its most used on apple mobile phone, now in its luminosity

and hardness is better than other materials, so the oca is now mobile phone

protective film of the most popular material.

film classification

1. properties: coated film【敏感詞】self-mucosal

membrane

1) the kinds of adhesives coated with adhesive

film are solvent - based rubber adhesive, solvent - based acrylic adhesive,

water-based acrylic adhesive,【敏感詞】silicone adhesive.

it is also the most commonly used in the

application of water-based acrylic adhesives, which can easily adjust the

adhesion【敏感詞】the transparency【敏感詞】weatherability.

2), since the mucous membrane usually took the

form of co-extrusion production,【敏感詞】the adhesive layer is commonly eva, ultra

low density polyethylene【敏感詞】polyolefin plastic resin as the main body, this kind

of structure form also gradually become the mainstream of the market, because it

is a film coating has more advantages, such as no glue residue, provide stable

adhesion, reduced cost of users【敏感詞】create higher profits for protective film

manufacturers.

2. classification by glue

rubber system: natural rubber, styrene

butadiene rubber, synthetic rubber;

characteristics of rubber protection film: soft

and fast enough to achieve final adhesion;

molecular mobility;

relatively easy to tear;

poor aging performance of natural

rubber;

the price is higher.

acrylic ester: emulsion (water based)【敏感詞】

solvent;

features of acrylic acid ester adhesive

film

1), emulsion acrylic (water-based acrylic) :

relatively illiquid, reached the final viscosity time is relatively long, low

protective film viscosity will increase viscosity increases with the increase of

time, environmental protection material, has good weather resistance, can be

quick to tear film;

2) solvent acrylic acid: difficult to meet the

high requirements of environmental standards, other characteristics are similar

to emulsified acrylic acid.

3. classification by base material

pe base material, pvc base material, pet base

material, opp base material【敏感詞】others

4. classified according to the protection film

market

1) traditional protective film: such as

galvanized steel plate protective film, color plate protective film, glass plate

or plastic sheet material protective film etc.

this kind of traditional protective film is

mainly applied in low value, which is low for performance【敏感詞】crystal point,【敏感詞】

is mostly coated with plastic film.

2) protective film of plane display instrument:

the application scope includes flat display, tft-lcd module, backlight module,

glass substrate【敏感詞】various optical components such as polarimeter, color

filter, etc.

this kind of protective film has high

requirement for the control of viscosity【敏感詞】crystal point, which is the

application of high additive value【敏感詞】high technology threshold.

3) protective film used for high tech

electronics, such as dry film【敏感詞】wafer grinding process.

this type of protective film usually needs to

be produced in a dustless chamber【敏感詞】is extremely strict with the requirements

of the crystals.

only a small number of protective film

manufacturers have sufficient technical capacity to meet these

requirements