Nowadays, auditorium chairs have been widely used in theaters, cinemas and school auditoriums. Due to the increasing market demand year by year, a large number of manufacturers have also emerged, but there are still many black-hearted manufacturers selling substandard auditorium chairs.

For leather auditorium chairs, special leather is used, which must be treated with anti-ultraviolet, heat-resistant, light-resistant, wear-resistant, etc., and the cost is high. Therefore, some unscrupulous manufacturers will use other low-priced leather to recharge. Consumers are buying leather auditoriums. When using the chair, pay attention to distinguish the true and false leather, the pros and cons. Let’s take a closer look at how to distinguish the quality of auditorium chair leather!

1. Document Law

The leather of the original factory has a clear source, and the basic information such as the production place, the tannery label, the leather test table, the leather use authorization letter, etc., is indispensable.

2. Label method

For genuine leather, the date of manufacture, the name and area of ​​the leather factory, etc. will be marked on the back. (The date of manufacture should not be too long, and if the leather is more than 3 years old, you should pay attention to whether there is mildew).

3. Viewing method

Under a 30x magnifying glass, it can be seen that the leather surface is like the surface of the moon, with craters and holes, and its air permeability is good. Cut the leather crosswise with a blade, and it can be seen that the color of the leather from the outer layer to the inner layer must be the same. Pay attention to whether there is a different color under the outer layer, and avoid buying second-hand leather that has been dyed or changed color.

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Details can be accessed by clicking here:https://www.aoyangschoolfurniture.com/aoyang-news/auditorium-chair-leather-identification.html

The linear vibrating screen is driven by double exciters. When the two exciters are rotated synchronously and in opposite directions, the exciting forces generated by the eccentric blocks cancel each other in the direction parallel to the motor axis, and in the direction perpendicular to the motor axis The stack is a resultant force, so the motion trajectory of the screen machine is a straight line. The two motor shafts have an inclination angle relative to the screen surface. Under the combined force of the exciting force and the self-gravity of the material, the material is thrown up on the screen surface and moves forward in a straight line, so as to achieve the purpose of screening and grading the material.

Can be used to automate operations in the assembly line. It has the characteristics of low energy consumption, high efficiency, simple structure, easy maintenance, and fully enclosed structure without dust spillage. The high sieving mesh number is 400 meshes, which can screen out 7 kinds of materials with different particle sizes. In the daily use of the linear vibrating screen, it is inevitable that some damage will not occur. The following vibrating screen manufacturers will introduce the common faults and solutions of the linear vibrating screen in detail.

1. Pipe beam fracture

If the wall of the tube beam is too thin, it may cause fracture. In this case, the same type of thick-walled tube or a larger type of tube beam should be used. But it should not be too large or too thick, because this will increase the vibration quality of the sieve and bring about many problems; the connection of each sieve plate of the dehydration and de-intermediation screen must have horizontal and vertical layers. If there is no vertical layer, water The pipe beam will leak from the gap between the screens and the pipe beam will be easily broken at the flushing place; the wider the screen, the easier the pipe beam will be broken.

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Details can be accessed by clicking here:https://www.hsd-industry.com/news/common-problems-of-linear-vibrating-screen/

Three-dimensional cultivation is also called vertical cultivation. Three-dimensional soilless cultivation is carried out by using three-dimensional growing racks. This kind of cultivation is carried out under the condition of not affecting the plane cultivation. Gradient layered cultivation, developing towards space, making full use of greenhouse space and solar energy to improve land utilization by 3~5 liters, which can increase the yield per unit area by 2~3 times.

Soilless culture is suitable for three-dimensional cultivation because of its light substrate and easy automation of the nutrient solution supply system. The three-dimensional growing rack is also called the three-dimensional growing tank, the three-dimensional growing tank for seedlings, and the soilless cultivation tank.

First, the classification of planting racks:

Growing racks can be used for various forms of growing, 1. Three-dimensional elevated type 2. Hanging growing type 3. Planting type flat on the ground; three-dimensional growing grooves can be used for soilless three-dimensional cultivation and planting, with matrix fertilizer or nutrient solution in the groove. The seedling matrix tank can be used for standing seedlings in greenhouses and common terrestrial seedlings.

Material: Environmentally friendly PVC

Size: large, small

Size: Top slot Height: 25cm Top width: 30cm Bottom width: 20cm

Side Slot Height: 16cm Top Width: 20cm Bottom Width: 12cm

Thickness: 3.0mm-3.5mm

Length: 3 meters, 4 meters, 6 meters, can be produced according to customer needs, the length is not limited

color: White

Applicable: greenhouse planting, balcony vegetable garden, greening engineering, horticulture, flower garden nursery, etc.

Features: flame retardant, anti-corrosion, lightweight, durable, high light, convenient construction

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Details can be accessed by clicking here:https://www.etegreen.com/blog/three-dimensional-growing-rack-classification-introduction/

Linyu in the snow

Ruixue flutters white Linyu factory

Snow country chariot dressed in enchanting silver

Domineering and restrained, showing a bit of a coquettish attitude

Put away the ingenuity, show the chivalrous bones

Dense pine covered with goose down

Sparse sycamore, Qiongzhi root upward

Cold plum turui reports the spring in the world

Withered trees come in spring, change to jade and butterfly clothes

 

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Details can be accessed by clicking here:https://www.ly-cimc-linyu.com/news/linyu-in-the-snow/

 

The square bottom machine is a paper bag with the end of the bottom sealed, through automatic conveying, automatic bottom opening, automatic bottom card release (non-intermittent type), automatic full glue spraying, cold glue spraying, automatic bottom paste, automatic compaction and other processes, the output is Back cover paper bag. This machine is operated by touch screen and controlled by optical fiber. One machine has four tubes and four guns. The spray guns can independently control the glue quantity and spray length, and the four guns can also be operated at the same time.

The square bottom machine bag has uniform glue spraying, high bag making accuracy and fast speed, and can produce various specifications of bags. However, various problems may occur in the square bottom machine during the bag making process, and the reasons need to be investigated and dealt with in time solve.

HD200D-IIIDJ Square Bottom Machine

Top and bottom films are prohibited
The prohibition of upper and lower sheets refers to the question that the front and rear sides are not aligned when making bags

1. Reasons: (1) The thickness of the composite film is uneven, and there are lotus leaf edges; (2) The tension of the double floating rollers is too small; (3) Some rollers rotate unevenly.

2. Solution: (1) Check and adjust the relevant guide rollers (such as compensation rollers, deflection rollers, etc.). (2) Adjust the tension of the double-lift floating rollers.

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Details can be accessed by clicking here:https://www.lyhuatianm.com/products-information/square-bottom-machine-fault-solution.html