塑封膜有好幾種，PE\POF\PVC，膠帶是BOPP的(de)，刷膠

PE：聚乙烯,它是由重複的(de)–CH2–單元連接而成的(de)。聚乙烯是通(tōng)過乙烯( CH2=CH2 )的(de)加成聚合而成的(de)POF就是的(de)意思，POF全稱多(duō)層共擠，它是将作爲中間層（LLDPE），共（pp）作爲内、外層，通(tōng)過三台塑化(huà)擠出，再經模頭成型、膜泡吹脹等特殊工藝加工而成的(de)。POF表面光(guāng)澤度高(gāo)、韌性好、抗撕裂強度大(dà)、熱(rè)收縮均勻及适合全自動高(gāo)速包裝等特點,是傳統PVC的(de)換代産品。BOPP是“Biaxially Oriented Polypropylene”的(de)縮寫，BOPP薄膜即雙向拉伸聚丙烯薄膜。

BOPP薄膜的(de)生産是将高(gāo)分(fēn)子聚丙烯的(de)熔體首先通(tōng)過狹長(cháng)機頭制成片材或厚膜，然後在專用(yòng)的(de)拉伸機内，在一定的(de)溫度和(hé)設定的(de)速度下(xià)，同時(shí)或分(fēn)步在垂直的(de)兩個(gè)方向（縱向、橫向）上進行的(de)拉伸，并經過适當的(de)冷(lěng)卻或熱(rè)處理(lǐ)或特殊的(de)加工（如電暈、塗覆等）制成的(de)薄膜。

常用(yòng)的(de)BOPP薄膜包括：普通(tōng)型雙向拉伸聚丙烯薄膜、熱(rè)封型雙向拉伸聚丙烯薄膜、香煙(yān)包裝膜、雙向拉伸聚丙烯珠光(guāng)膜、雙向拉伸聚丙烯金屬化(huà)膜、消光(guāng)膜等。

Plastic sealing film has several kinds, PE\POF\PVC, tape is BOPP, brush glue

PE: Polyethylene, which is composed of repeated -- CH2 -- units joined together. Polyethylene is by ethylene (CH2=CH2) addition polymerization of POF is the meaning, POF full name multi-layer co-extrusion, it will be as an intermediate layer (LLDPE), a total (pp) as the inner and outer layer, through three plasticized extrusion, and then through the die head molding, film bubble blowing and other special processes. POF surface gloss, toughness, tear strength, uniform thermal shrinkage and suitable for automatic high-speed packaging, is the replacement of traditional PVC products. BOPP is the abbreviation of "Biaxially Oriented Polypropylene". BOPP film is namely biaxially oriented polypropylene film.

BOPP film production is the polymer polypropylene melt first through the long and narrow head into sheet or thick film, and then in the special stretching machine, at a certain temperature and set speed, at the same time or step in the vertical two directions (vertical, horizontal) for stretching, And after appropriate cooling or heat treatment or special processing (such as corona, coating, etc.) made of film.

Commonly used BOPP films include: ordinary bidirectional stretching polypropylene film, heat seal bidirectional stretching polypropylene film, cigarette packaging film, bidirectional stretching polypropylene pearlized film, bidirectional stretching polypropylene metallized film, die film, etc.