Shockproof thermoplastic helmet liner and manufacturing method thereof

Abstract

The invention discloses a shockproof thermoplastic helmet liner. The shockproof thermoplastic helmet liner is formed by stacking multiple layers of sheets processed to be of a head shape. Each sheet is provided with hemispherical mold cavities distributed in an array mode. The hemispherical mold cavities are open. The hemispherical mold cavities in every two adjacent sheets are mutually embedded, or connected in a butted mode or engaged. The middle of the liner contains similarly spherical hollow bodies distributed in an array mode, and the hollow bodies are formed by mutually connecting the hemispherical mold cavities in every two adjacent sheets in a butted mode. A manufacturing method of the shockproof thermoplastic helmet liner comprises the steps that firstly, based on an injection molding technology, a pressing technology, or a blow molding technology, similarly helmet-shaped sheet base materials without the hemispherical mold cavities are manufactured; secondly, based on a suction and blow molding technology, the hemispherical mold cavities distributed in the array mode are formed in the sheet base materials; finally, according to the stacking mode of mutual embedment, butt connection or engagement, the sheets are stacked in a multi-layer mode, bonded and punched to obtain the shockproof thermoplastic helmet liner. The shockproof thermoplastic helmet liner has the advantages of being simple in structure, comfortable to wear, convenient to machine, environmentally friendly in material, capable of being used for personalized customization and the like.

Description

technical field [0001] The invention belongs to the technical field of thermoplastic molding, and in particular relates to a helmet liner and a manufacturing method thereof. Background technique [0002] The traditional helmet consists of a composite shell, a polystyrene (PS) foam hard liner and a polyurethane (PUR) foam soft liner. The composite material shell provides the basic shape, size, strength, rigidity of the helmet and the positioning holes and connecting holes for assembling other accessories, and is the main load member. PS foam plastic hard liner and PUR foam plastic soft liner are used as absorbing materials to absorb impact energy, delay the action time of impact force, and play a role of life-saving protection for the wearer. Existing helmet liner is divided into big, medium and small three different models to make after head shape data statistical analysis. Due to the difference in the shape of the wearer's head, this makes it difficult for the helmet line...

AI Technical Summary

Problems solved by technology

Due to the difference in the shape of the wearer's head, this makes it difficult for the helmet liner to correspond to the head shape of the wearer, resulting in poor comfort for the wearer

In addition, the liner (PS or PUR) of the existing helmet has high hardness, small deformation, and poor air permeability. When the wearer's head shape is different, the hard liner is difficult to relieve the force between the head and the shell, and it is easy to shake and stable. poor sex

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