Abstract:
This creation is related to safety toe cap for work shoes, especially related to a kind of multi-axial weaving angle, multi-dimensional structure and capable of increasing strength for work shoes with safety toe cap base material structure.

Description:
BACKGROUND OF THE INVENTION  
       [0001]     (1) Field of the Invention  
         [0002]     This creation is related to safety toe cap for work shoes, especially related to a kind of multi-axial weaving angle, multi-dimensional structure and capable of increasing strength for work shoes with safety toe cap base material structure.  
         [0003]     (2) Description of the Prior Art  
         [0004]     According to known work shoes safety toe cap habitually used, it is by using mixed material such as fiber glass or thermoplastic resin etc. and molding by place it in a mold by hot press or thermoform. Because the strength is limited and not enough elongation, it is unable to be made as high strength safety toe cap. Consequently there is a kind of composite lamination molding material  10  as per  FIG. 1 , by means of strengthen fiber weaved cloth and weaved mix thermoplastic resin  11  in the center, the top and bottom face are using roving layer of strengthen short fiber glass mix thermoplastic resin  12 , attempt using sandwich lamination to improve its strength, but this strength is also not perfect.  
       SUMMARY OF THE INVENTION  
       [0005]     The main objective of this creation is to provide a kind of safety toe cap for work shoes that can provide another kind of molding material for increase safety toe cap strength, to make safety toe cap possess high strength structure.  
         [0006]     To achieve the above mentioned objective, this creates a kind of safety toe cap base material structure for work shoes. It is including at least 3˜5 layers of fiber layer comprised by method of pressing. And, each of these fiber layers is formed by molding materials using strengthen fiber glass or thermoplastics resin filament weaving at four kinds of different angles. To provide a kind of multi-axial and multi-dimensional structure safety toe cap base material structure, results in better strengthen effect and safety. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0007]      FIG. 1 —The cross sectional diagram for habitually known toe cap base material.  
         [0008]      FIG. 2 —3D exploded diagram for this invention base material layout.  
         [0009]      FIG. 3 —Plan diagram for each layer of base material fiber weaving method under this invention.  
         [0010]      FIG. 4  is an enlarged drawing of area A in  FIG. 3 .  
     
    
     DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS  
       [0011]     As indicated by  FIG. 2 ˜ FIG. 4 , this invention provide work shoe safety toe cap base material structure  20 , allow different strength requirement by choosing at least 3˜5 layers of fiber, and then use pressing method to bond together such fiber layers by hot press and form a base material structure. This invention in practice is using a first fiber layer  22 , a second fiber layer  24  and a third fiber layer  26  forming three fiber layers structure, certainly can also rely on using different number of such fiber layers with same method as this invention to form a base material. But we point out clearly that base material apply with and made by same method as this invention is also belong to same technical category as this invention. However, each of such fiber layers  22 ,  24 ,  26  bring into practice under this invention comprise of molding filament material from strengthen fiber glass or thermoplastic resin, certainly also can be comprise of molding filament from other composite materials. Such strengthen fiber glass or thermoplastic resin molding filament materials and other composite molding filament materials all categorized as habitually known and are not the main feature section of this invention. The main features of this invention consist of:  
         [0012]     Each of such fiber layer  22 ,  24 ,  26  are formed by molding material using strengthen fiber glass or thermoplastic resin filament weaving at four kinds of different angles. Including one first filament  221  or  241 ,  261 , one second filament  222  or  242 ,  262 , one third filament  223  or  243 ,  263  and one fourth filament  224  or  244 ,  264  to present at a predetermined angle, their angle ranging from 0˜360 degree. Please refer to  FIG. 3 ,  FIG. 4 , it merely provide a fiber layer  22  for illustration as below, in which first filament  221  is parallel with the paper&#39;s x-axis and is 0 degree horizontal direction arrange in parallel order. The second filament  222  is 90 degree with paper&#39;s x-axis, in another word the second filament  222  with the first filament  221  is cross in a perpendicular state, and at the weaving link, the second filament  222  is by ways of one up one down winding through each of the first filament  221 .  
         [0013]     The third filament  223  is by way of 45 degree to each of the first filament  221  and second filament  222 , during weaving one filament is positioned above first and second filament  221 ,  222 , another filament is positioned below first and second filament  221 ,  222 , arrange at cross overlapping position between first and second filament  221 ,  222 .  
         [0014]     The fourth filament  224  is similarly by having 45 degree angle to each of the first filament  221  and second filament  222 , and is cross perpendicular with the third filament  223 . During weaving one filament is similarly positioned above the first and second filament  221 ,  222 , and another filament is positioned below first and second filament  221 ,  222 , arrange at cross overlapping position between first and second filament  221 ,  222 , moreover during weaving it winding through the third filament  223 . From the above safety toe cap base material structure  20 , because each of such fiber layer  22 ,  24 ,  26  are plied up with different angle, and the weaving that comprise the fiber layer  22 ,  24 ,  26 , their first, second, third and fourth filament  221 ˜ 224 ,  241 ˜ 244 ,  261 ˜ 264  are weaving by winding through different angle and the links are binding tightly. So the safety toe cap base material structure  20  for this invention has multi-axial and multi-dimensional fiber layer structure. Therefore it has the effect of sustain various reaction force from different angle, in another word, better strengthen effect and better safety can be safety can be produced, thoroughly eliminate the deficiency of habitually used toe cap.  
         [0015]     We must provide explanation, that weaving by different angle of filaments, no matter what the angle is between first and second filament, and the angle that the third and fourth filament is winding through the first and second filament, as long as the base material is pile together by multi-layers of fiber layers, and each fiber layer is formed by weaving multiple filament and different angles, having multi-axial direction and multi-dimensional fiber layer structure, providing same effect as the actual invention, they are also belong to same technical category as this invention.  
         [0016]     Sum up the description above, this invention of work shoes safety toe cap base material structure, its entire structure is truly the first invention and posses practical effect, it should have conform to the invention pattern requirement. We earnestly request examining commissioner to examine in detail, and grant us the pattern at the earliest.