Flat-knitted full-formed helmet shell preform, preparation method and helmet shell thereof
A prefabricated, fully formed technology, used in weft knitting, household components, other household appliances, etc., can solve the problems of lack of solutions, poor dimensional stability, and high processing costs, eliminating cutting and splicing, and improving impact resistance. performance, the effect of improving production efficiency
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0044] A method for preparing a flat-knitted full-form helmet shell preform, the method is to prepare helmet shell preforms with two different weaving directions by combining longitudinal weaving and transverse weaving respectively with partial weaving; The reinforcing yarn is added during the weaving process, and the helmet shell preform with the reinforcing yarn is obtained by transverse weaving and longitudinal weaving;
[0045] Described longitudinal weaving specifically includes:
[0046] When knitting on a flat knitting machine, the knitting width is the arc length between the left ear part and the right ear part of the helmet shell, and the knitting width is related to the thickness of the yarn and the horizontal density of the fabric; the knitting direction is from the forehead to the back of the head according to the helmet shell Weaving in the direction from the back of the head to the forehead;
[0047] Described transverse weaving specifically includes:
[0048] ...
Embodiment 2
[0069] A method of preparing a helmet shell, comprising the steps of:
[0070] The helmet shell preforms with the reinforcing yarns woven in the transverse direction and the longitudinal direction are laid in the helmet mold in a mutually perpendicular manner; after that, the resin solution is injected into the helmet mold, and the helmet shell is obtained by curing and stripping;
[0071] details as follows:
[0072] (1) Wipe the release agent evenly in the helmet mold, and then spread the helmet shell preform in a longitudinal weaving direction and a helmet shell preform in a transverse weaving direction obtained in Example 1 in mutually perpendicular directions placed in the helmet mold;
[0073] (2) Under the condition of room temperature of 26°C, the epoxy resin and the curing agent are uniformly mixed with a mass ratio of 2:1 to obtain a resin solution; wherein the resin system is purchased from Changzhou Hualike New Materials Co., Ltd., The resin type is epoxy resin A...
PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| depth | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More