复合软包装与基体复合型

以促进销售和软包装的使用。复合膜，如纸张/塑料复合膜，塑料/塑料复合膜，铝/塑复合膜，等是由多种承印物（主要是纸张，塑料薄膜，铝箔），并通过复合材料制成。这些占基片的主要位置是塑料薄膜。

在在不同可分为基板：角色不同基材复合膜基层电影。授权的性能，基本要求复合膜包装，如在机械强度，阻隔性，透明性和一定程度的其他财产;功能层膜，使复合膜，如高阻隔性能，气体通过选择性等专业性的职能， 。;密封粘合层膜，使复合膜可热封胶。通常复合膜膜的许多基层干部和分区{gj}，加上聚丙烯复合膜，复合膜的聚酯，尼龙复合薄膜等。

几乎所有的塑料薄膜可以用作包装材料，但对复合薄膜基材，主要是大的物种，如聚乙烯（PE），聚丙烯（PP），聚酯（PET），尼龙（PA - 6，巴勒斯坦权力机构1 66），以及功能（阻隔性等），优良品种，如聚偏二氯乙烯共聚物（聚偏二氯乙烯）。乙烯和乙烯酸共聚物（EVOH）的，离子等。这些基材（塑料薄膜）的形成过程可分为压延膜，吹塑薄膜，流延膜（CPE的CPP）的双向拉伸薄膜（双向拉伸的BOPET，博帕），多层共挤复合薄膜等分割，也可分为高，低的特别高的障碍（如聚偏二氯乙烯，EVOH）的，优异的阻隔（如博帕拉伸法，丙烯腈共聚物），一般的障碍（如终端，人民党，封箱）和其他类别的障碍。

软包装材料及其应用
复合材料的物理特性
选择哪几个基板，形成复合软包装复合薄膜是由包装，国家和包装要求的性质决定的。从现在所知，可用复合软包装的货物或商品的包装，种类繁多，如饮料，果汁，果酱，油腻的材料，如饼干和干蔬菜，茶叶，奶粉等干燥食品。药品和用品，肉类制品，五金制品等，其特性和包装要求各不相同，有的需要保护，以及一些需要香水，有些需要一个透明的，有些是一个高强度，等等。至关重要的是，基体的基本特性有更充分的了解。

关于身体的基板可以从广东省科学技术出版社出版的“包装材料和容器手册获得的财产。”关于复合薄膜和包装应用中的“包装材料和容器，组成手册”一书的258?261，提供了更详细的复合BOPP薄膜，双向拉伸聚酯薄膜和复合博帕的复合膜和包装应用组成。除了

决定包装要求，衬底加工和经济（包装成本），也应考虑。下面就是例子。方便面，饼干和其他干燥食品包装，录音带，录像带，卷烟，如包装盒，糖果和其他小包装，包装要求因潮湿，防污，已收紧的作用，同时希望，低低成本的包装，并选择双向拉伸聚丙烯薄膜（波普）为基层薄膜复合膜的低价格是合适的，封箱除了更低的价格，更重要的是非常低的水蒸气透过率。

茶，咖啡，奶粉等，都水分和香味的要求已经足够，所以选择一个好的气体阻隔性能，并有复合薄膜的双向拉伸聚酯薄膜为基材的高香味更合适，如果要求更高阻隔性能和抗紫外线，它必须是复合层的铝箔或真空蒸汽电影。

肉制品，如香肠，火腿等，需要保存，防腐蚀和一些水分，为基层尼龙薄膜基层薄膜复合膜非常适用于软包装材料，因为尼龙膜屏障，良好的氧气比，和较大的水蒸气透过率。

饮料，果汁，石油产品和洗发水等液体包装，包装要求，可挤压性，应该是很好的基质选择强度，如的BOPET，博帕等，此外，软饮料，果汁等。食品包装也需要保护，防腐等，所以还必须考虑基体阻隔性能拉伸法，博帕可满足要求。

通过烹调食物或要求的包装材料应选择好基层如的BOPET，博帕，以及密封粘接强度基层实力的电影，也是密封，如流动的延伸聚丙烯薄膜粘合薄膜，良好的烹饪能力层（人民党），投聚乙烯薄膜（CPE）的。当然，他们的复合膜包装产品，以弥补烹饪和煮熟后可以耐腐蚀，而且还选择胶粘剂品种（很多人现在使用聚氨酯型粘合剂）的质量和生产技术水平。柔性复合

新的基板材料
发展
新的发展包括两个方面：一个塑料薄膜和软包装复合基板新物种被修改，并制定了新的电影类型。塑料薄膜新品种可用于复合软包装物，并已聚碳酸酯（PC），聚（2,6乙烯酯萘1）（笔），聚4 -甲基- L -戊烯- （TPX）等对。电脑电影蒙上了国内生产，厚度可达到20微米。 TPX薄膜在沸水中煮，耐腐蚀，xx，最重要的特点是它的氮气和氧气xxx差较大，对肉类和蔬菜，特别是适合的包装，它的高耐热性，可用于蒸煮袋。

修改通过了新基板的发展，间苯二甲酸改性聚酯薄膜，比未改性改善薄膜的阻隔性能，已通过或添加剂混合薄膜技术开发新品种，如高透明聚酯薄膜和聚丙烯薄膜，消光白如聚丙烯薄膜。

此外，在新的加工技术的引进，发展，近年来新材料，新成果，如在BOPET薄膜真空沉积二氧化硅增强阻隔性能，或在真空蒸铝时添加少量的钛可提高蒸汽薄膜和包装外观的影响。

On the basic profiles of composite flexible packaging

Composite flexible packaging with the type of substrate

compound to facilitate the sale and use of flexible packaging. Composite films, such as paper / plastic composite film, plastic / plastic composite film, aluminum / plastic composite film, etc. are by a wide variety of substrates (mainly paper, plastic film, aluminum foil) and are made through the composite. These accounted for the main location of the substrate is plastic film.

different substrate in the composite film in the role of different substrates which can be divided into: the grass-roots film. Empower composite film packaging of the basic requirements of performance, such as a certain degree of mechanical strength, barrier properties, transparency and other properties; functional layer membrane, to give composite films specialized functions, such as high barrier properties, gas selectively through, etc.; sealing adhesion layer membrane, so that composite films can heat sealing adhesive. Usually composite film membrane to many of its grass-roots and division titles, plus polypropylene composite film, composite film of polyester, nylon composite films and so on.

almost all the plastic film can be used as packaging materials, but for complex thin film substrate, it is mainly large species, such as polyethylene (PE), polypropylene (PP), polyester (PET), nylon (PA-6, PA 1 66), as well as function (barrier property, etc.) superior varieties, such as polyvinylidene chloride copolymer (PVDC). Ethylene and ethylene acid copolymer (EVOH), ionomer, etc.. These substrate (plastic film) may be forming process is divided into rolling film, blow film, cast film (CPE, CPP), biaxially oriented film (BOPP, BOPET, BOPA), co-extruded composite film, etc.; can also be divided into high and low barrier of special high-barrier (such as PVDC, EVOH), excellent barrier (such as BOPA, BOPET, acrylonitrile copolymer), a general barrier (such as CPE, CPP, BOPP) and other categories.

composite physical properties of flexible packaging material and its application

choose which of several substrates to form composite films for flexible packaging composite is determined by the nature of packaging, state and packaging requirements. From now know, the available composite flexible packaging to the packaging of goods or merchandise, many different types, such as beverages, fruit juices and jams, greasy materials, biscuits and dry foods such as dried vegetables, tea, milk powder and so on. Pharmaceuticals and supplies, meat products, hardware and so on, their traits and packaging requirements vary, and some require preservation, and some require fragrance, and some require a transparent, and some to be a higher intensity, and so on. It is essential that the basic properties of the substrate has a more full understanding.

about physical properties of the substrate can be obtained from the Guangdong Science and Technology Publishing House of “packaging materials and containers Manual.” About the composition of composite films and packaging applications, in the “packaging materials and containers Manual”, a book of 258 ~ 261, provided a more detailed composite BOPP film, BOPET composite BOPA film and the composition of composite films and packaging applications. In addition to

decided to packaging requirements, the substrate processing and economy (packaging cost) are also to be taken into account. The following are examples. Instant noodles, biscuits and other dry food packaging, tapes, video tapes, cigarettes, such as packaging box, candy and other small packaging, packaging requirements due to moisture, anti-fouling, has tighten the role, at the same time hope that low-cost packaging, choosing low prices The biaxially oriented polypropylene film (BOPP) for the grass-roots film composite membranes are suitable, BOPP apart from lower prices, more importantly, are very low water vapor transmittance.

tea, coffee, milk powder and so on, both the requirements of moisture and fragrance to be adequate, so choose a good gas barrier properties, and have a high fragrance of BOPET composite films for the substrate is more appropriate, if requested higher barrier properties and UV resistance, it must be composite layer of aluminum foil or vacuum steam film.

meat products, such as sausage, ham, etc., require preservation, anti-corrosion and some moisture, nylon film for the grass-roots film composite film is very applicable to flexible packaging materials, because nylon membrane barrier to oxygen than good, and the larger water vapor transmittance.

beverages, fruit juice, oil products and shampoo, such as liquid packaging, packaging requirements can extrusion resistance, it should be good substrate selection intensity, such as BOPET, BOPA and so on, In addition, soft drinks, fruit juices, etc. Food packaging also requires preservation, antisepsis, etc., so also have to consider the substrate barrier properties, BOPET, BOPA may meet the requirements.

requested through Cooking food or packaging materials should be chosen well the grass-roots strength film, such as BOPET, BOPA, as well as the sealing adhesive strength also good cooking capability layer of sealing adhesive film, such as flow extension of polypropylene film (CPP), cast polyethylene film (CPE). Of course, with their composite films made of packaging products to make cooking and after cooking can resistant, but also selected adhesives varieties (many are now using polyurethane-type adhesive) and the quality and level of production technology. Flexible composite

the development of new substrate material

new development includes two aspects: a new species of plastic films and flexible packaging composite substrate is modified and developed a new type of film. New varieties of plastic film can be used for composite flexible packaging substrates, and have polycarbonate (PC), poly (2,6 ethylene acid ester Naphthalene 1) (PEN), poly 4 - methyl-l-penten - (TPX) and so on. PC Films has cast the domestic production; thickness can be achieved 20μm. TPX Films cooking in boiling water-resistant, non-toxic, the most important characteristics are its nitrogen and oxygen through a greater rate of poor, particularly for meat and vegetables suitable for the packaging, its high heat resistance can be used in retort pouch.

modified through the development of a new substrate, and isophthalic acid modified polyester film, the film barrier properties than the unmodified improve; have adopted or additive blend thin film technology development new varieties, such as high-transparent polyester film and polypropylene film, Extinction and white films such as polypropylene.

In addition, after the introduction of new processing technology to develop new material, new results in recent years, such as in the BOPET film vacuum deposition silica enhance barrier properties, or in a vacuum when steaming aluminum add a small amount of titanium may improve the appearance of steam film and packaging effects. (07-12-10)