The market demand for pulp molded products continues to expand, and more and more industries have begun to choose pulp molded packaging. Do you know how to choose a high-quality pulp molded product? Today, LVXIN takes pulp molded industrial packaging as an example to teach you how to choose a high-quality pulp molded packaging.Today, people are interested in wet pressed molded pulp There are also many dependencies, and the expectations for products are getting higher and higher. https://www.pulptray.com/
Dry press moulded pulp
1. Measurement conditions
The standard environment for sample state adjustment and testing of pulp molded industrial packaging is carried out in accordance with the provisions of GB/T10739. Factory inspection is carried out under normal temperature and humidity conditions, and the relative humidity is 50%＼2% in the standard environment state of 23≧＼1≧. The sample pretreatment time is more than 24H (storage and standard environment) The measurement of the outer dimensions of pulp molded industrial packaging is mainly measured by a steel ruler or caliper with a graduation of 1mm. At least 5 samples are measured, and the arithmetic average is taken. The value is at least accurate to 1mm.
2. Package weight
Use a general measuring tool (generally an electronic scale) of appropriate accuracy to weigh the mass of the product, weigh at least 5 samples, take the average value, and calculate the mass deviation according to the formula.
3. Appearance
The main requirements for the appearance of the product are:
There should be no cracks on the surface of the product (BB/T 0045—2007 stipulates that the crack width is less than 1mm and the length is less than 40mm);
The surface of the product is flat and has no missing edges;
The product is impermeable and has a uniform texture;
The product has no accumulation, no lamination, and no defects;
The dustiness of the product appearance (or the number and area of ??different color points meet customer requirements;)
The appearance quality of the product should be visually inspected under natural light conditions.
high-quality pulp molded packaging
4. Moisture content
The moisture content of molded pulp products refers to the ratio of the reduced mass of pulp molded products after drying according to the prescribed method to the mass at the time of sampling, which is generally indicated as a percentage; for the pulp molding industry, a handheld moisture meter can generally be used to measure the moisture content of the product, but if the moisture content of the product is to be accurately measured, it is also necessary to refer to GB/T 462—2003 and use a drying oven, balance, etc. for measurement.
5. Color
The color inspection of pulp molded products is mainly based on visual comparison with the customer’s signed samples to avoid color difference. For some products with more stringent requirements, whiteness detection and color difference detection can be considered. The main measuring equipment used is whiteness detector and colorimeter.
6. Water absorption
Select the mesh surface of the product and test it according to the provisions of GB/T 460. Adjust the ink line width to 1MM, and the width of the ink line after measuring for 30S should be ＋2MM. At least three different positions need to be selected for measurement.
pulp molded products
7. Drop test
Simulate the situation when different edges, corners, and surfaces fall to the ground at different heights, so as to understand the damage of pulp molded products and packaged objects and evaluate the fall height and impact resistance that product packaging components can withstand when falling. Therefore, improve and perfect the packaging design according to the actual situation of the product and within the scope of national standards. The drop test of general pulp molding companies is mainly for industrial packaging. The drop test standard adopted is the drop of a single color box, the drop height is 0.8m~1m, and the drop conditions are one corner, three edges, and six sides. After the drop, the function and appearance of the packaged product must not change, and the overall structure of the pulp molded product must not be damaged.
Choosing high-quality molded pulp packaging involves careful consideration of your packaging needs, material quality, manufacturing process, design, environmental impact, testing, and molded pulp packaging supplier reputation. Molded pulp packaging is a sustainable and versatile solution for protecting products during shipping and storage.