济南OPP自粘袋：常用包装材料-OPP膜与PP膜的区别

　　PP袋的定义

　　Definition of PP bag

　　pp袋就是以聚丙烯为材料而制作成的塑料袋，其一般采用彩印，胶印工艺，色泽鲜艳 ，一般多做编织袋，另外PP袋是拉伸性的聚丙烯塑料，属于热塑性塑料的一种。其、无味、表面光洁透明。容易燃烧，火焰情况为熔融滴落，上黄下蓝，离火后烟少，继续燃烧，多用于化妆品、食品、玩具、服装、文具、电子、五金制品等各行业的包装。颜色为透明，质量优良，韧性好，因其硬脆的材质决定了其只适于包装不适于承重。PP化学名称：聚丙烯英文名称:Polypropylene(简称PP)PP为结晶型高聚物，常用塑料中PP轻，密度仅为0.91g/cm3(比水小)。通用塑料中，PP的耐热性，其热变形温度为80-100℃，能在沸水中煮。PP有良好的应力开裂性，有很高的弯曲疲劳寿命，俗称“百折胶”。PP的综合性能优于PE料。PP产品质轻、韧性好、耐化学性好。PP的缺点：尺寸精度低、刚性不足、耐候性差、易产生“铜害”，它具有后收缩现象，脱模后，易老化、变脆、易变形。日常生活中，常用的保鲜盒就是由PP材料制成。

　　PP bag is a plastic bag made of polypropylene material, which is generally processed by color printing and offset printing, with bright colors. It is usually made as a woven bag. In addition, PP bag is a stretchable polypropylene plastic, which belongs to a type of thermoplastic. It is non-toxic, odorless, and has a smooth and transparent surface. Easy to burn, with a flame condition of melting droplets, yellow on top and blue on bottom. After leaving the fire, there is less smoke and it continues to burn. It is commonly used for packaging in various industries such as cosmetics, food, toys, clothing, stationery, electronics, and hardware products. The color is transparent, the quality is excellent, and the toughness is good. Due to its hard and brittle material, it is only suitable for packaging and not suitable for load-bearing. PP chemical name: Polypropylene (abbreviated as PP) PP is a crystalline high polymer, commonly used as the lightest plastic with a density of only 0.91g/cm3 (smaller than water). Among general plastics, PP has the best heat resistance, with a heat deformation temperature of 80-100 ℃, and can be boiled in boiling water. PP has good stress cracking resistance and high bending fatigue life, commonly known as "100 fold adhesive". The comprehensive performance of PP is superior to that of PE material. PP products are lightweight, have good toughness, and good chemical resistance. Disadvantages of PP: low dimensional accuracy, insufficient rigidity, poor weather resistance, and susceptibility to "copper damage". It has a phenomenon of post shrinkage, and after demolding, it is prone to aging, brittleness, and deformation. In daily life, the commonly used fresh-keeping box is made of PP material.

　　OPP袋的定义

　　Definition of OPP bag

　　OPP袋的定义opp是定向拉伸性聚丙烯膜，具有透明度高、较脆等特征，由OPP单片对折后侧面封边并在开口舌头处粘有自粘封条，使用时装入产品撕去封条表面的保护皮后将舌头对折后粘牢即可，使用方便、美观大方，广泛使用于服装、食品、印刷,文具,化妆品,纸张等行业。

　　The definition of OPP bag is oriented stretchable polypropylene film, which has the characteristics of high transparency and brittleness. OPP is folded in half and the side is sealed with a self-adhesive seal at the opening tongue. When in use, the protective skin on the surface of the seal is peeled off and the tongue is folded in half and glued firmly. It is convenient to use, beautiful and elegant, and widely used in industries such as clothing, food, printing, stationery, cosmetics, paper, etc.

　　还可根据客户需要印刷各种图案及打蝴蝶孔、飞机孔。opp膜比普通pp膜具有更高的抗拉伸力、挺度、透明度、光泽度、印刷性能等等。自然也要高些，规格不同也不一。OPP膜的密封性是传统膜的一倍以上，从而使其产品的保湿、保鲜性更强，保存时间更长。

　　We can also print various patterns, butterfly holes, and airplane holes according to customer needs. OPP film has higher tensile strength, stiffness, transparency, glossiness, printing performance, and more than ordinary PP film. The price naturally needs to be higher, and the price varies depending on the specifications. The sealing performance of OPP film is more than twice that of traditional film, making its products more moisturizing, fresh-keeping, and have a longer storage time.

　　OPP就是定向聚丙烯，O应该主要指生产工艺!OPP：定向，位伸性聚丙烯，是聚丙烯的一种以及双向聚丙烯(BOPP)OPP主要产品：OPP胶带：以聚丙烯薄膜为基材，具有高抗拉伸力、质轻、无味、环保、使用范围广等优点。OPP瓶：重量轻、成本低、透明度改善、耐热性佳，适合用于热灌装。近年，双向聚丙烯(OPP)透明瓶成为了PET瓶的代选。

　　OPP stands for oriented polypropylene, while O mainly refers to the production process! OPP: oriented, stretchable polypropylene, is a type of polypropylene and a two-way polypropylene (BOPP) OPP main products: OPP tape: based on polypropylene film, it has the advantages of high tensile strength, light weight, non-toxic and odorless, environmental protection, and wide range of applications. OPP bottle: lightweight, low cost, improved transparency, excellent heat resistance, suitable for hot filling. In recent years, OPP transparent bottles have become an alternative to PET bottles.

　　两种材质的区别：

　　The difference between two materials:

　　1、触感方面，OPP会显得比较脆，比较硬，而PP柔软性更好一些。2、透明度方面，OPP透明度更好，PP的透明度稍差一些，现在有些高透PP的透明度也可以接近OPP。

　　1. In terms of touch, OPP appears more brittle and hard, while PP has better softness. 2. In terms of transparency, OPP has better transparency, while PP has slightly lower transparency. Nowadays, some high transparency PPs can also have transparency close to OPP.

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