The Present Situation and Development Trend of Papermaking and Packaging Testing Instruments in Enterprises

As a kind of product, paper-making packaging testing instrument is a small branch of the instrumentation family, and it is a special instrument for the quality standards of paper-making and packaging products. The production 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 of products, low demand, high dependence on relevant standards, strong specificity, high degree of mechanical and electrical integration, high accuracy of quantitative values, and high technical difficulty.

The characteristics of multi-variety and small-batch production of paper-making and packaging inspection equipment have limited the overall development of the industry. Over the years, although there has been progress in variety, specifications, output, and quality, overall, compared with other industry products, It can still be summed up with slow development, limited scale, backward technology, low efficiency, little attention and self-development, and it belongs to marginalized industries. In spite of this, over the years, papermaking and packaging testing instruments have been recognized by the relevant industries in the production and development of the paper industry and the packaging industry, in the implementation of quality standards and control of product quality, especially in the production and quality of carton packaging industry. In the development process, the promotional role played is recognized by the carton industry.

According to the analysis of the actual needs of the papermaking and carton industry quality inspection instruments, it is believed that the types, specifications, and availability of papermaking packaging testing instruments can basically meet the general needs of the industry but cannot meet the development of standards and some new products. The main reasons for the new needs are: Currently, in the instrument industry, the ability to develop and design high-precision instruments is limited, and investment in human and financial resources is insufficient. Under the conditions of market economy, the industry focuses on maintaining livelihoods, and it is large in investment and risks. Major projects with long development time are unwilling or dare to get involved. This has affected the in-depth development of China's papermaking packaging testing instruments and the overall technological progress, resulting in long-term reliance on imports for certain important and urgently needed instrument types.

This article intends to analyze the status quo of the paper-making and packaging inspection instrument industry, objectively understand the achievements that have been made over the years, understand the deficiencies in clear-headed understanding, and put forward practically the direction of efforts for the sustainable development of the industry, for the papermaking and carton packaging industry. Perform standards and quality inspections to provide better service.

Analysis of Present Situation of Papermaking and Packaging Testing Instruments

In China, papermaking and packaging testing instruments have experienced development in the past half century. In the early 1960s, they began to design and produce a small number of mechanical structural instruments. In the 1970s, they expanded the scale of their products. In the 1980s, they carried out technological transformation of mechatronics technology. At the end of the 20th century, the level of products was upgraded, and the product variety and specifications have been basically complete. The output has reached a certain scale, and the quality and technology have reached a certain level. However, there are still many problems in the industry as a whole, and the industry should carefully summarize the outlook. In the future, the Eli industry will develop in the long term. The following is an objective analysis of the current status of the industry in several aspects.

1. Variety and specifications

The development of testing instruments is inseparable from the development of related standards. In terms of papermaking and carton industry, according to the statistics in the National Paper Industry Standard System Catalog, there are more than 350 types of paper products, and more than 160 related test method standards, including physical machinery. There are 85 performance test methods. In addition, there are more than 50 standard items for semi-finished products and finished products related to carton products. In order to meet the needs of paper and carton product quality testing, in order to implement the relevant test method standards, various types of testing instruments require approximately 70 specifications (including special instruments, general-purpose instruments, and various types of auxiliary instruments). The tasks undertaken by the papermaking and packaging inspection instrument industry are the development and production of special instruments and various special appliances. The basic conditions of various types of instruments are as follows:

1) Paper and paperboard basic property testing instruments, such as quantitative, thickness, tightness, moisture, absorbability, etc., are the most commonly used basic instruments. Such instruments include: Digital Quantitators, Manual Thickness Gauges, Electric Thickness Gauges, High Precision Thickness Gauges, Manual Corrugated Board Thickness Gauges, Electrical Corrugated Board Thickness Gauges, Digital Display Corrugated Board Thickness Gauges, Variable Pressure Thicknesses Meters, general moisture analyzers, rapid moisture analyzers, simplified absorptiometric analyzers, flip-type absorptiometry, absorption height detectors and more than a dozen varieties, these varieties can basically meet the actual needs. The main problem with this type of instrument is that the accuracy of the paper thickness measurement does not yet meet the ISO 534 guidelines. In addition, the paper and paper board moisture measurement, there is currently no ideal rapid moisture measurement instrument that can replace the traditional standard 105 degree drying method.

2) Paper and board strength performance testing equipment, such as tensile strength, compressive strength, burst strength, tear strength, bending strength, folding fatigue strength, puncture strength, short-range compression strength and internal bond strength Testing equipment is the leading instrument for performance testing. Such instruments include: constant-speed charge-pendulum pendulum tensile tester (including four types of specifications), constant-speed tensile-electronic tensile tester (more than ten types of specifications), and cardboard compression Tester (with a variety of structures), carton compression tester (also available in three sizes), paper burst tester, paperboard burst tester, pointer puncture tester, digital display puncture tester, Taber Stiffness meter, digital display Taber stiffness meter, MIT folding resistance meter, Shore-type folding resistance meter, multiple pendulum tear meter, digital display tear meter, short-distance compression meter, etc. This is the leading product of paper-making packaging testing instruments. The main problem with this type of instrument is that the variety is not yet complete, such as the short-distance compression instrument and the internal bond strength tester, and some products have not yet fully met the requirements of the relevant ISO standards, such as the tensile strength tester, burst strength tester, and resistance There are still some deficiencies in the technology of the folding instrument, which needs to be improved.

3) Paper and paperboard printability test instruments, such as the surface roughness, surface roughness, etc. of the printing surface, are important instruments with high technical requirements and difficulty in manufacturing. Such instruments include: Buick smoothness meter, Bunsen roughness meter, Printed surface roughness meter (PPS), pendulum-type IGT meter (commonly known as pull-hair instrument), electric IGT meter (also known as multi-function printing adaptation Sex tester) etc. This kind of instrument has many applications in China's 38 product standards for printing paper and paperboard, but at present, it can only produce Buick smoothness meter and pendulum-type IGT meter, and many high-grade printing papers have already been used. PPS instruments and electric IGT instruments can only rely on imports. This is a problem that should be redoubled in the paper-making packaging testing instrument industry.

4) paper and cardboard some special performance testing equipment, such as permeability, wear resistance, brightness, gloss, color and other properties of the detection equipment, these special properties for some advanced paper, high-grade cardboard is very important. Such instruments as Shawr-type permeable testers, Cree-type permeable testers, Gree-type permeable testers, wear resistance testers, whiteness meters, glossmeters, etc., among them, whiteness meter, gloss meter and Xiao Boer permeability meter has been produced for many years, but several other instruments are currently not developed, basically rely on imports.

5) Paper and paperboard performance testing aids, instruments and various types of punching tools. This is an indispensable and important equipment for the quality inspection of paper and board. Such equipment as: Contra's groove tester, pulp dryer, standard sampler, adjustable-distance sampler, quantitative tester, corrugated board side pressure, flat pressure, adhesive strength sampler , paper and paperboard tensile, ring pressure, stiffness, special tearing test punch and a variety of special support devices such as more than 10 varieties. These assistive devices have been developed and manufactured to meet the needs of use.

6) Pulp and paper pulp testing instruments, strict classification of such instruments should belong to a small laboratory equipment, the current domestic can only produce Xiao Boer type analyzer, Dutch 23 liters small beater, simple paper sheet shaper Such a small number of varieties, but some very much needed varieties can not be produced, such as the Canadian freeness meter, short cut index meter, concentration meter, slurry disc mill, etc., so this type of equipment is a weak link in the detection instrument industry.

Based on the above brief analysis, we can see that there are more than 70 varieties of papermaking packaging testing instruments developed and manufactured in China, which can basically meet the requirements of standards and quality inspections, but at the same time we should also see that there are more than a dozen instrument types that are in great demand Imports, these scarce varieties are the focus of future work.

2. Level of papermaking packaging testing equipment

Paper-making packaging testing instruments belong to special instruments. Their production, development and application are limited by the product standards and test method standards for paper-making and carton products. Without standards, there are no quality indicators. Without quality indicators, there is no research on test methods and special testing. The development and production of the instrument.

Foreign instrument products serve ISO, SCAN, TAPPI, BS, DIN, JIS and other international or regional standards, while our instruments are mainly used for GB and QB services. Standards in different countries or regions have differences and commonalities. Judging from the current situation at home and abroad, most detection instruments are designed and manufactured according to the requirements of international standards. The main technical parameters of the instruments are the same, which reflects the unity of similar instruments. On the other hand, instruments produced by various countries or different companies are also different in terms of technology, quality, structure, and performance. In this regard, the level of instrumentation can be reflected. The assessment of the current status of the instrument is judged by comparison with similar foreign instruments. The method of comparison is to conduct multi-factors overall assessment and statistical analysis. The factors considered are: variety specification, appearance, performance stability, complete function, and conformity , ease of use, price cost, after-sales service, supply of spare parts, verification and calibration, operation technology training, ordering convenience, etc. 12 aspects. According to the survey of users in the industry, analysis of foreign instruments has certain advantages in terms of performance stability, variety specifications, appearance, etc. From the perspective of usage and practicality, domestically produced instruments have advantages; the greatest advantage of domestically produced instruments is price advantage. In summary, the paper-making and packaging inspection instrument industry has made many achievements in research and development, production and supply, and standard quality, and made great contributions, but it should also be noted that industries There are still many problems in the area and there will be no smooth sailing in the future development. It also requires the industry to make greater efforts to overcome various difficulties and continue to explore. As long as we look for directions and clear goals, the overall development goals of the industry will surely be realized.