Negative Poisson's ratio screen cloth

Abstract

The invention relates to the technical field of screen cloth, in particular to negative Poisson's ratio screen cloth. The screen cloth comprises screen cloth main lines; the screen cloth main lines are arranged at equal intervals; a supporting framework and an elastic contraction mechanism are arranged between every two adjacent screen cloth main lines; the supporting frameworks and elastic contraction areas are sequentially and alternately arranged from top to bottom; each screen cloth main line comprises an elastic main core line, a first section penetrating line and a second section penetrating line; the elastic main core lines are arranged in a wave shape; and the first section penetrating lines are arranged on one sides of the elastic main core lines in a penetrating mode. The negative Poisson's ratio screen cloth has the beneficial effects that the negative Poisson's ratio screen cloth is reasonable in structural design, and the screen lines are tightly connected; and the screen cloth main lines and the elastic contraction areas are matched, and when the screen cloth main lines are pulled towards the two ends, the screen cloth main lines drive the elastic contraction mechanisms of the elastic contraction areas to be opened, so that the negative Poisson's ratio screen cloth is lengthened, meanwhile, the width of the negative Poisson's ratio screen cloth is increased, stress per unit area is reduced, and the use feeling of a user is improved.

Description

technical field [0001] The invention relates to the technical field of mesh cloth, in particular to a mesh with negative Poisson's ratio. Background technique [0002] Existing materials have Poisson's ratio phenomenon (meaning that after longitudinal stretching, the material will generally narrow in the horizontal direction), this material can widen after longitudinal stretching to achieve an effect of negative Poisson's ratio, which can improve the fabric application field. The existing mesh does not have the performance of negative Poisson's ratio. For example, the existing mesh is designed on the shoulder strap of the school bag. When the weight in the backpack is heavier, the shoulder strap of the school bag will be stretched, but at this time the width of the school bag will be reduced. Narrowing increases the force per unit area of ​​the shoulder, which makes the user feel uncomfortable. [0003] Therefore, we need a negative Poisson's ratio mesh to solve the above ...

AI Technical Summary

Problems solved by technology

The existing mesh does not have the performance of negative Poisson's ratio. For example, the existing mesh is designed on the shoulder strap of the school bag. When the weight in the backpack is heavier, the shoulder strap of the school bag will be stretched, but at this time the width of the school bag will be reduced. Narrowing, increasing the force per unit area of ​​the shoulder, which makes the user feel bad

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