Current situation and Prospect of the hottest pape

Current situation and Prospect of paper packaging testing instruments

Abstract: the development of paper packaging testing instrument industry is closely related to the development of product quality standards related to paper packaging carton industry. Through the analysis of the current situation of the paper packaging testing instrument industry, this paper reveals the existing problems, seeks the development direction of the industry, and looks forward to the future prospects of the industry

overview

as a kind of product, paper packaging testing instrument is a small branch of the instrument family, and it is a kind of special instrument serving the product quality standard of paper and packaging industry. The emergence and development of such products depend on the development of relevant standards and the implementation of relevant standards. Such products are characterized by a wide variety, small demand, high dependence on relevant standards, strong specificity, high degree of electromechanical integration, high accuracy requirements of measurement value, and great technical difficulty

the characteristics of multi variety and small batch production of paper packaging testing instruments have limited the overall development of the industry. Over the years, although there has been progress in variety, specification, output, quality and other aspects, in general, compared with other industry products, it can still be summarized as a marginal industry with slow development, limited scale, backward technology, low efficiency, less attention and self-development. Nevertheless, over the years, the contribution of paper packaging testing instruments to the production and development of the paper industry and packaging industry, the implementation of quality standards and the control of product quality has been recognized by the relevant industries, especially in the production and quality development of the carton packaging industry, and its role in promoting is affirmed by the carton industry

according to the analysis of the actual needs of the pressure testing machine of the quality detector in the paper and carton industry, it is believed that the variety, specification and supply of the current paper packaging testing instrument can basically meet the general needs of the industry, but it can not meet the development of standards and the new needs of some new products and quality indicators. The main reason is that at present, the ability to develop and design high-precision instruments in the instrument industry is limited, The investment of human and financial resources is insufficient. Under the condition of market economy, the industry focuses on making a living, and is unwilling or afraid to get involved in major projects with large investment, high risk and long development time, which affects the in-depth development and overall technological progress of China's paper packaging testing instruments, resulting in the long-term dependence on imports of some important and urgently needed instrument varieties

through the analysis of the current situation of the paper packaging testing instrument industry, this paper wants to objectively understand the achievements made for many years, clearly understand the shortcomings that still exist, and practically put forward the direction of efforts, in order to achieve the sustainable development of the industry, and provide better services for the implementation of standards and quality testing in the paper and carton packaging industry

analysis of the current situation of paper-making packaging testing instruments

in China, paper-making packaging testing instruments have experienced nearly half a century of development. They began to design and produce a small number of mechanical structure instruments in the early 1960s, expanded the variety scale in the 1970s, carried out the electromechanical integration technology transformation in the mid-1980s, and upgraded the products in the late 1990s. So far, the product varieties and specifications have been basically complete, and the output has reached a certain scale, The quality and technology have reached a certain level, but there are still many problems in the industry as a whole. The industry should carefully summarize the achievements and look forward to the future, so as to facilitate the long-term development of the industry. The following is an objective analysis of the current situation of the industry in several aspects

1. variety and specification

the development of testing instruments is inseparable from the development of relevant standards. For the papermaking and carton industry, according to the statistics in the national papermaking industry standard system catalogue, there are more than 350 varieties of papermaking products and more than 160 relevant test method standards, including 85 physical and mechanical performance test methods. In addition, there are more than 50 standard projects involving raw materials, semi-finished products and finished products of carton products. In order to meet the needs of paper and carton product quality inspection, and to implement the relevant test method standards, all kinds of testing instruments need more than 70 varieties and specifications (including special instruments, general instruments and various auxiliary instruments). The task undertaken by the papermaking packaging testing instrument industry is the development and production of special instruments and various special instruments. At present, the basic situation of various instruments is as follows:

1) the testing instruments for the basic properties of paper and paperboard, such as quantitative, thickness, tightness, moisture, absorption and other properties, are the most commonly used basic instruments. Such instruments include: digital quantitative measuring instrument, manual thickness instrument, electric thickness instrument, high-precision thickness tightness instrument, manual corrugated board thickness instrument, electric corrugated board thickness instrument, digital display corrugated board thickness instrument, variable pressure thickness instrument, general moisture measuring instrument, fast moisture measuring instrument, simple absorption measuring instrument, overturned absorption measuring instrument, absorption height measuring instrument, etc, These varieties can basically meet the actual needs. The main problem of this kind of instrument is that the accuracy of paper thickness measurement cannot reach the index specified in ISO534; In addition, there is no ideal rapid moisture determination instrument for paper and paperboard, which can replace the traditional standard 105 degree drying method

2) paper and paperboard strength performance testing instruments, such as tensile strength, compressive strength, bursting strength, tear strength, bending strength, folding fatigue strength, puncture strength, short-distance compression strength and internal bonding strength, are the leading instruments for performance testing. Such instruments include: constant speed loading pendulum tensile testing machine (with four types and specifications), constant speed stretching electronic tensile testing machine (with more than ten types and specifications), paperboard compression tester (with multiple structures), carton compression testing machine (also with three types and structures), paper bursting tester, paperboard bursting tester, pointer puncture tester, digital display puncture tester, Taber stiffness tester There are more than 30 varieties of digital display Taber stiffness tester, MIT folding tester, Schopper folding tester, multi swing tear tester, digital display tear tester, short distance compression tester, etc., which are the leading products of paper packaging testing instruments. The main problem of such instruments is that the varieties are not complete, such as short-range compression instrument and internal bonding strength instrument, which have no products; Some products have not fully met the requirements of relevant ISO standards, such as tensile strength meter, bursting strength meter and folding strength meter. There are still some deficiencies in technology, which need to be improved

3) paper and Paperboard Printing suitability testing instruments, such as the testing instruments for the smoothness, roughness and surface strength of the printing surface, are important instruments with high technical requirements and great manufacturing difficulties in performance testing instruments. Such instruments include Buick smoothness instrument, Bentsen roughness instrument, printing surface roughness instrument (PPS), pendulum IGT instrument (commonly known as roughening instrument), electric IGT instrument (also known as multifunctional printing adaptability tester), etc. Such instruments are widely used in 38 product standards of printing paper and paperboard in China, but at present, only Buick smoothness instrument and pendulum IGT instrument can be produced in China, and many high-end printing papers will push up the price of domestic wood pulp long ago. PPS instruments and electric IGT instruments that have been adopted can only rely on imports, which is a problem that the paper packaging and testing instrument industry should redouble its efforts to solve in the future

4) testing instruments for some special properties of paper and paperboard, such as permeability, wear resistance, brightness, gloss, chromaticity and other properties, these special properties are very important for some high-grade paper and paperboard. Such instruments as Schopper permeability meter, Klein permeability meter, gray permeability meter, wear resistance tester, whiteness meter, gloss meter, etc. among them, whiteness meter, gloss meter and Schopper permeability meter have been produced for many years, but other instruments are not developed and produced at present, and basically rely on imports

5) auxiliary instruments, appliances and various punching and cutting tools for paper and paperboard performance testing are indispensable and important equipment to ensure the testing quality in the process of paper and paperboard performance testing. There are more than ten varieties of such equipment, such as: Conrad groove test corrugator, slurry dryer, standard sampler, adjustable distance sampler, quantitative test sampler, corrugated board edge pressing, flat pressing, adhesive strength sampler, paper and board tensile, ring pressing, stiffness, tear test special punching cutter, and various special supporting devices. These auxiliary devices have been developed and produced, which can meet the use needs

6) paper pulp testing instruments. These instruments are strictly classified as small laboratory equipment. At present, only a small number of varieties such as Schopper type disintegration meter, Dutch type 23 liter small beater, simple paper sheet former and so on can be produced in China, while some very needed varieties cannot be produced, such as Canadian freeness meter, shortening index meter, concentration meter, pulp disc mill and so on, Therefore, such equipment is a weak link in the detection instrument industry

the above brief analysis shows that at present, there are more than 70 varieties and specifications of paper packaging testing instruments developed and produced in China, which can basically meet the needs of standard implementation and quality testing, but at the same time, it should also be noted that there are still more than 10 urgently needed instrument varieties that rely on imports, and these scarce varieties are the focus of future work

2. The current level of paper packaging testing instruments

paper packaging testing instruments are special instruments, and their production, development and application are limited by the product standards and test method standards of paper and carton products. Without standards, there will be no quality indicators, and without quality indicators, there will be no research on test methods and the development and production of special testing instruments

foreign instrument products serve ISO, scan, TAPPI, BS, DIN, JIS and other international or regional standards, while Chinese instruments mainly serve GB and QB. The standards of different countries or regions have both differences and similarities. From the current situation at home and abroad, most testing instruments are designed and manufactured according to the requirements of international standards, and the main technical parameters of the instruments are the same, which reflects the unity of similar instruments. On the other hand, the instruments produced by different countries or enterprises are also different in technology, quality, structure, performance, etc., which can reflect the level differences of instruments in this regard. The evaluation of the current level of the instrument is judged by comparing it with similar foreign instruments. The method of comparison is to conduct multi factor overall evaluation and statistical analysis. The factors considered include 12 aspects: variety and specification, appearance, performance stability, functional integrity, applicability of standard implementation, ease of use, price and cost, after-sales service, supply of spare parts, verification and calibration, operation technology training, convenience of ordering, etc. According to the investigation of users in the industry, foreign instruments have certain advantages in terms of performance stability, variety and specification, appearance, etc; From the perspective of use and practicality, domestic instruments have advantages; The biggest advantage of domestic instruments is price advantage

the above is only a rough view. A more detailed analysis and comparison requires a reliable basis for inquiry, that is, we need to master more specific materials. In the case of insufficient information, we can also get the following evaluation opinions according to the actual intelligence and consultation opinions:

1) at present, the technology adopted by domestic and foreign products is generally the same, mainly reflected in the measurement and control technology, The characteristics are: products are based on modern electronic technology, and in terms of measurement technology, analog technology has transitioned to digital technology; Discrete devices have been integrated by