The hottest paper-based energy procurement mode is

The paper printability test (PPT) project, organized and developed by the publishing materials working committee of China Publishing Association, aims to establish a paper performance quantitative procurement model by studying the paper printability, supervising the market paper quality, promoting the formation of a paper market operation mechanism with hierarchical positioning and consistent quality and price

concept germination

in 2003, China Publishing Association launched the paper printability testing project (PPT). To put it simply, we should design a set of experiments to study the printability of paper, distinguish the quality of paper in the market by the printability, and provide reference for purchasing. Over time, we should gradually establish a market selection mechanism to promote high quality and good price, so that different grades of paper can have their own positions in the market, and the quality and price are consistent

ppt project has made some progress in the practice from 2004 to 2006. After 2007, PPT stopped temporarily. The main reason is that PPT takes into account both scientific research and supervision, and the experimental design required by the two is different, the professional depth is different, and the implementation frequency and funding are also different. Obviously, the edition association is not ready for scientific research. For example, when a large number of experimental data conflict with existing theories, how to explain and find further experimental directions requires great energy from experts, and the association lacks specialized researchers

however, after more than 3 years of PPT practice, we have gradually formed a set of experimental methods and found some clues that affect the printability of paper, although it needs to be further confirmed. What we value most is that printability, as another evaluation index besides the physical and chemical properties of paper, is gradually entering the consciousness of paper makers and buyers. Once a concept is formed, it will generate great behavioral motivation. For example, once the concept of green is accepted by people, people's life patterns will change. The concept of printability is not well known in the industry, especially the awareness of buyers is not strong, but through the efforts of PPT, it has sprouted, which is the greatest value of PPT in the past

Restart ppt

in 2009, the new publishing materials working committee entrusted four publishers to form a new project team to restart ppt

this gives us an opportunity to reflect on the reasons why ppt has not been put into practice in the past. First, we have not come up with real hard results, such as proving that the ink absorption of light paper should not be higher than how much to ensure the minimum restoration effect of the image. Second, we have not established a standard paper sample, and we cannot make even a rough quantitative judgment on the printability of any piece of paper

the so-called hard achievements, fundamentally speaking, rely on scientific research, but also rely on today's accumulation, and doing more will have an inductive effect. But you don't have to wait until everything is ready to start using it. For example, we have a tendentious impression of the relationship between ink absorption and printing effect, but we are not particularly sure. We can temporarily take 55% ink absorption as a reference value for light paper

the problem of establishing standard pattern is relatively complex. The standard faces uncertainty, and the color will fade after the printed matter is put aside. Uncertainty cannot be avoided, and the conditions of each batch of paper and each printing will not be exactly the same. The new ppt will try to establish a dynamic relative standard for the printability of paper. The practice is to select one paper of high, medium and low grades as the standard reference. For example, they represent the levels of 9, 8 and 7 respectively in the 10 point rating. Each test includes a standard paper sample and the reference score. Facing the problem of paper stability, the project team will screen and track with the most cautious attitude, strive to find the paper suitable for making standards, and can also cooperate with paper enterprises in a targeted manner to produce paper with stable raw material ratio and production process

do these two things well, and PPT has the basic conditions to move from concept to practice. The basic practice of the new ppt has no substantial change from the previous one, but the designer's concept has been adjusted and the potential connotation of PPT has been excavated

establish a detection index system to make the operation more stable

ppt from concept to practical, what does it mean for the publishing, printing and paper industry? In my opinion, it will form a purchaser Quality Alliance similar to the threshold of the industry, put market pressure on paper suppliers, and then straighten out the market operation mechanism. Generally speaking, the paper procurement in the publishing industry is quite extensive. Usually, only the specifications, gram weight, whiteness, wood pulp content (writing offset), loose thickness (light), procurement quantity and price are agreed in advance. The PPT mode is adopted, which may not only increase the physical and chemical indicators of paper such as ink absorption and surface strength, but also agree on the requirements of printing suitability such as density contrast value and dot magnification under standard printing conditions. A set of interrelated index system can effectively ensure the printing effect, especially the image reproduction effect, which is good for paper buyers

the diversification and accuracy of purchase indicators is a hard constraint. The agreed ink absorption is 55%, and reaching 60% is beyond the standard. The purchaser can determine the required indicators through ppt's prior detection and recommendation, and can also recheck and control the paper quality at any time during use

the quality of papermaking in China is unstable. Some enterprises' costs rise, prices cannot go up, and profits decline. In order to reduce costs and ensure profits, they steal product a into product B. PPT is to solve this problem. Through the establishment of a set of detection index system, the quality and price of the supplier's products are consistent, the quality and price are high, and the products of various grades are in their places and flow smoothly, so as to realize the product classification of the market. With PPT, paper-making enterprises can also stably produce products of different quality levels. Product a has the quality of product a, and product B has the market of product B. enterprises produce with peace of mind, customers consume openly, and what changes in the market is price, not quality

therefore, PPT is really put into procurement practice, which is beneficial to both buyers and sellers, and is conducive to the formation of a good market operation mechanism. In the short term, the pressure on suppliers is greater, but this is also an opportunity for Chinese paper enterprises to make progress, otherwise Chinese enterprises will always linger in the primary stage

ppt needs to be tried, adjusted and communicated from concept to practice. Its procurement mode is not difficult to implement. The difficulty lies in the tensile experiment and tensile action Pt project of P polymer itself, that is, it should put forward a well-based index system scheme, which is like eating is easy and cooking is difficult

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