[China Packaging Network News] Sustainable development of papermaking and packaging testing instruments and the development of related standards are inseparable. According to the statistics in the National Paper Industry Standardization System Catalog, there are about 360 kinds of paper products, and there are 160 related test method standards. There are many items, of which 85 are physical and mechanical performance test method standards. In addition, more than 50 standard items for semi-finished and finished raw materials involving cartons are also available.
In order to meet the urgent need for quality inspection of paper and carton products, and to implement the relevant test method standards, papermaking packaging testing instruments currently require approximately 70 varieties of specifications on the market. The responsibilities of the paper-making and packaging inspection instrument industry are the development and production of special instruments and various special appliances. The basic conditions of comprehensive paper-making and packaging testing instruments are as follows:
First, paper and cardboard basic properties testing equipment
This includes the quantitative, thickness, tightness, moisture, absorption and other properties of the detection equipment, is the most commonly used basic instrument. This type of instrument includes: digital quantitative measuring instrument, manual thickness meter, electric thickness meter, high-precision thickness tightness meter, manual corrugated board thickness meter, electric corrugated board thickness meter, digital display corrugated board thickness meter, variable pressure thickness meter , General moisture analyzer, rapid moisture analyzer, simplified absorption tester, flip-type absorption tester, absorption height measuring instrument and other more than 10 varieties, these varieties can meet the actual needs.
Second, paper and cardboard strength performance testing equipment
Strength performance refers to the physical properties, which include tensile strength, compressive strength, burst strength, puncture strength, tear strength, flexural strength, folding fatigue strength, short-range compression strength and internal bond strength, etc. Performance testing instruments, these physical tests are the dominant instruments for the detection of the strength properties of paper and board. Such instruments include constant-velocity loading pendulum-type tensile testing machines (four types of specifications), constant-speed tensile electronic tensile testing machines (more than ten types of specifications), and cardboard compression testers ( A variety of structures), carton compression testing machine (with three specifications, a variety of structures), paper bursting resistance meter, paperboard bursting resistance meter, number display puncture meter, Taber type stiffness meter, number display Taber Degree instrument, MIT folding resistance instrument, Xiao Boer type folding resistance instrument, multi-pendulum tearing instrument, digital explicit tearing instrument, short-distance compression instrument and so on more than 30 varieties, this is papermaking packaging testing instrument The leading product is also the foundation.
Third, paper and paperboard printability testing instruments, such as printing surface smoothness, roughness, surface strength and other testing equipment, is an important instrument in performance testing equipment, high technical requirements, manufacturing more difficult. 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 (roughness meter) and electric IGT instruments can only rely on imports. This is a problem that the paper-making and packaging inspection instrument industry should redouble efforts to resolve in the future, and it is also a bottleneck in the current domestic market.
Fourth, paper and cardboard some special performance testing equipment
In this category, there are specific testing instruments such as breathability, abrasion resistance, brightness, gloss, chroma, etc. These special properties are very important for some advanced papers and high-grade paperboards. Such instruments as Shawber-type air permeability meter, Gurley-type air permeability meter, wear resistance tester, whiteness meter, gloss meter, etc., among them, whiteness meter, gloss meter and Shobel air permeability meter have been It has been produced for many years, but several other instruments have not yet been developed and produced, and basically rely on imports.
Fifth, paper and board performance testing aids, instruments and various types of punching tools, which is the paper and paperboard performance testing process, to ensure the quality of the test is an indispensable important auxiliary equipment. Such equipment as: flute test pressure gauging apparatus, slurry desiccator, standard sample cutter, adjustable pitch sampler, quantitative test sampler, corrugated board side pressure, flat pressure, bond strength sampler, paper And cardboard, tension, ring pressure, stiffness, special tear test tearing and various special support devices such as more than 10 varieties. At present, these assistive devices have been developed and produced domestically, which can greatly meet the needs of customers.
Sixth, papermaking pulp slurry testing equipment category, strict classification of such instruments should belong to a small laboratory equipment, the current domestic can only produce Xiao Boer-type decontamination instrument (beating degree meter), Canada freeness meter, Dutch-style 23 Rising small beaters, simple sheet formers and other small quantities, but some of the very needed varieties can not be produced, such as cut short index meter, concentration meter, slurry disc mill, etc., so this type of equipment is also the domestic testing equipment industry A weak link.
Based on the above brief analysis, it can be seen that currently there are more than 70 varieties of papermaking packaging testing instruments developed and produced in China. At the same time, we should also see that there are still more than a dozen equipment types that are in great need of import. So these instruments that rely on imports are the focus of our future work.
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