[China Packaging Network] There are many basic physical property testing items for corrugated paper, and the following are some of the basic parameters of the corrugated paper. This article will guide you through the testing of the product, and introduce, guide, and recommend targeted test equipment. , I hope that through this article, you can give you more purpose in the selection of testing equipment.
Paper quantitative analyzer
Quantification is one of the most basic performance indicators of paper, and quantification is often regarded as a characteristic parameter of paper. The so-called "quantitative" is the "mass per unit area of ​​paper and board measured in accordance with the specified test method, in g/m2" (as defined in ISO 536). The accuracy of quantitative determination of paper is related to the area accuracy of the tested sample and the accuracy of the weighing device. The test method standard imposes strict requirements on the cutting device and the weighing instrument. The key point is in the sampling accuracy of the quantitative sampler. Because the fiber of the corrugated medium is relatively thick, it is recommended to use a stamped circular doser first. The testing instrument is: paper quantitative sampler; after sampling is completed, it is used with electronic balance. Recommended instrument model: QZ-SC quantitative sampler.
Paper thickness meter
Thickness is a basic performance parameter of paper. Some basic properties and strength properties of paper are related to thickness, so it is an important performance test item, and the unit is μm or mm. The thickness inspection must be carried out under the specified conditions. The paper thickness detection instrument must meet three basic requirements for detecting the contact area of ​​the paper, the contact pressure, and the touchdown speed of the probe. Otherwise, the measurement result will be inaccurate. Recommended instrument model: QZ-PT6 paper and board thickness meter.
3 tightness meter
Tightness quantification is the mass per unit volume of paper and paperboard measured in accordance with the specified test method and the unit is g/m3. In actual tests, it was obtained by dividing the quantification by the thickness. General enterprises use this indicator relatively little. This value can be automatically calculated by the QZ-PT6E high precision intelligent thickness meter.
4. Ring pressure strength
Cardboard ring compression strength refers to the maximum force that can be taken before a sample is crushed by inserting a sample of a certain size into the sample holder to form a circular ring and applying pressure between the upper and lower pressure plates. The ring pressure strength characterizes the ability of the cardboard edge to withstand pressure and is an important strength indicator for cardboard and corrugated paper. The paperboard ring pressure strength affects the side pressure strength of the corrugated board, and the side pressure strength of the corrugated board will have an important influence on the overall compressive strength of the carton. The testing equipment is: QZ-CT3K intelligent compression tester (with ring pressure core mold).
5. Computer tensile tester
The tensile strength of corrugated base paper is an important performance indicator, which reflects the ability of the material to resist external forces. This index is generally expressed in absolute tension (N or kN), tensile strength (kN/m), and split length (m or km). Elongation refers to the relative elongation (%) when the specimen reaches the ultimate tension. Test instruments for measuring tensile strength are generally equipped with a machine structure that measures elongation. Testing equipment: QZ-LL300 intelligent tensile testing machine.
6. Moisture meter
Moisture content is also an important performance indicator for corrugated paper. The initial moisture content of the corrugated medium will directly affect the quality of the corrugated board. When the moisture content is high, the base paper will be soft, but the tensile strength will be relatively low. If the moisture content is low, the base paper will be dry and the dome will crack when pressed. In the production of corrugated board, it is desirable that the moisture content of the best strength value is generally 6% to 8%. The traditional method of moisture measurement is the drying and weighing method at 105°C. Using oven and balance, this method is the standard method. However, many companies are using the rapid moisture meter on the market. This method is a non-standard fast method. . Test equipment: Low-temperature oven and high-precision balance suitable for standard requirements.
7. Paper burst resistance meter
Burst strength is a comprehensive strength index, and experimental studies have confirmed that burst strength is a composite function of tensile strength and elongation. Generally, the packaging paper should have sufficient burst strength, and the burst strength is expressed in kPa. The testing equipment is: QZ-BSM16 intelligent computer paper burst resistance meter.
8.MIT folding instrument
The folding endurance is the logarithm (base 10) of the number of double folds required for reciprocating folding to a break under a certain standard condition. The folding endurance is the index of the paper's resistance to folding fatigue. The folding endurance is not required in the national standard. However, in actual use, customers often use it as an indicator to control the quality of corrugated paper. The testing equipment is: QZ-MIT folding resistance instrument.
In the detection of corrugated base paper, the general configuration of the instrument is: QZ-SC quantitative sampler, QZ-PT6 paper and board thickness gauge (QZ-PT6E high-precision intelligent thickness gauge), QZ-CT3K intelligent compression tester ( With ring pressure core die) QZ-LL300 intelligent tensile tester, QZ-MIT folding resistance meter, moisture analyzer.