Several types of paper are used in the corrugated board industry. They are divided in 2 different types called Liner (箱板纸）and Fluting/Medium(瓦楞芯纸）./ 有几种类型的纸用于瓦楞纸板行业，它们可分为两种类型：箱板纸和瓦楞芯纸。
Liner paper is mainly used as the outside papers of the corrugated sheet. We use a top-liner(里纸）on the single-facer and a bottom-liner(面纸）at the double facer. There are also a middle-liner(中纸）when running double-double, but in some cases, fluting or medium is also used as middle-liner./箱板纸主要用在瓦楞纸板的外面。 单面机部分的叫里纸，双面机部分的叫面纸。当生产多瓦楞纸板时又要用到中纸，在某些情况下，瓦楞原纸也被用来做为中纸使用。
Liner paper differs from fluting or medium paper, mainly through the different fibre length, and throught the fabrication methods, it is also mostly more expensive./箱板纸与瓦楞芯纸的主要不同之处在于纤维的长度和制造方法，箱板纸更昂贵。
Different types of liner are used on the corrugator. such as: KRAFTPAPER(牛皮纸）， SCHRENZ or WASTEPAPER(废纸原纸）， DUPLEX or TEST LINER(全废箱板纸）
Different types of fluting: SCHRENZ or WASTEPAPER(废纸原纸）， SEMI-CHIMICL(半化学纸）， a combination of both(两者混合）, and STRAW or BOGUS PAPER(草纸）.
All of these papers are available in different grades and quality's, one more easy to run on the corrugator than others, depending on different factors. we call this the "runnability" of the paper. Especially the fluting plays a big part in the running of the corrugator. We will look further into the different demands whick will decide what makes a certain paer easy to run, and another difficult./ 所有原纸都有不同的档次和质量，一种原纸比另一种原纸更容易在瓦楞机上运行，取决于不同的因素。我们将之称为原纸的“运行性能”。尤其是瓦楞芯纸对瓦楞机的运行有着重大的影响。我们将深入了解为什么有的原纸容易运行，而有的不容易运行。
SCHRENZ or WASTEPAPER: 废纸原纸
has been widely used in most of the Eurpean country, especially in Holland, Germany, Belgium, Austria, France. This maily due to the fact that these countrys have practically no virgin wood to be used for the paper industry, as Scandinavia has. it is a porous paper, who takes up liquid easily such as starch, but is rather weak as a paper. Is therefore mainly used as fluting paper, due to the fact that it can become a rather stiff paper. Because it is cheap, it is also widely used as an inside liner. 曾在欧洲国家被广泛使用，尤其是荷兰，德国，比利时，奥地利和法国。主要原因是这些国家缺乏如北欧那样丰富的原木资源。它是一种多孔的纸，易吸水，例如淀粉浆，强度比较差，可变得较坚挺，因此，主要用作瓦楞芯纸。 因为它价格便宜，所以也被广泛用作中纸。
When used as a fluting, remember that schrenz is rather difficult to take-up heat, therefore it is essential that we heat the paper sufficiently to reach the correct temperature. Use the pre-conditioner to achieve this.当我们使用废纸原纸作为瓦楞芯纸使用时，一定要注意，它的吸热性非常差，因此，要达到我们所需要的温度，充分的加热是必不可少的，我们可通过预热烘缸来帮助我们实现。
SEMI-CHEMICAL.半化学纸：
The name semi-chemical is mostly used to indicate cellulose and less for paper, as it is nearly always used to mix with wastepaper or old paper. This paper has been developed especially for the corrugted board industry, and has the advantage to creat a very stiff, strong fluting.半化学主要用来指纸的纤维素低，因为它几乎总是用来混合废纸或旧纸制成。此类纸特别适合于瓦楞纸板行业，具有成型后坚挺的优势。
Some scandinavian papers have also a small percentage of Kraft fibre mixed in it, what increase even more the strength of the fluting, but also makes it more difficult to run! The fibres are very short and hard, are mainly positioned in length direction and causes therefore a rather difficult fluting to run. It is nearly impossible to run semi-chemical without the steam showers and without conditioning the paper with the pre-conditioner.一些北欧的原纸混合入了一小部分牛卡纤维用来进一步加强瓦楞芯纸的强度，但也使得它更加难以运行！纤维很短和硬，主要依长度方向分布，因此运行起来相当困难。没有蒸汽喷淋和用预热器预热的帮助，半化学纸是非常难以运行的。
1. Recognizing and detecting paper faults/常见纸张缺陷
- Humidity (generally 8%) /水份含量（湿度） （通常8%）
- Loose edges, bad winding. / 纸一边松，或
- absorption
- starch penetration.(drop test!)
- Caliper.
- Calandering,smoothsurface
(责任编辑：文雨初)
