Patent Publication Number: US-2007111624-A1

Title: Breathable warm-keeping fabric

Description:
BACKGROUND OF THE INVENTION  
      1. Field of the Invention  
      The present invention relates to a warm-keeping compound material and more particularly, to a breathable warm-keeping fabric.  
      2. Description of the Related Art  
      A fabric may be covered with a layer of warm-keeping cotton sheet material to provide a warm-keeping effect. However, the warm-keeping cotton sheet material cannot effectively isolate dispersion of thermal energy. Further, in order to enhance the warm-keeping effect, the warn-keeping cotton sheet material must be made relative thicker. However, increasing the thickness of the warm-keeping cotton sheet material relatively lowers the breathing power of the warm-keeping cotton sheet material. It is uncomfortable to wear a heavy cloth made of a fabric having a thick warm-keeping cotton sheet material.  
     SUMMARY OF THE INVENTION  
      The present invention has been accomplished under the circumstances in view. It is the main object of the present invention to provide a breathable warm-keeping fabric, which has thin, light, flexible, breathable, warm-keeping, waterproof and aluminum film characteristics.  
      To achieve this and other objects of the present invention, the breathable warm-keeping fabric comprises a base layer prepared from cotton, nylon or polyester, a covering layer prepared from cotton, nylon or polyester, and an aluminum film layer sandwiched between the base layer and the covering layer. The aluminum film layer is prepared from an aluminum mixture, which contains a part of aluminum powder, a part of an assistant, and part of TPU (Thermoplastic Polyurethane), PU (Polyurethane), TPE (Thermoplastic Polyester Elastomer) or PE (Polyester). 
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       FIG. 1  is a sectional view of a breathable warm-keeping fabric according to a first embodiment of the present invention.  
       FIG. 2  is a sectional view of a breathable warm-keeping fabric according to a second embodiment of the present invention. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION  
      Referring to  FIG. 1 , a breathable warm-keeping fabric in accordance with the first embodiment of the present invention is shown comprising a base layer  10 , a covering layer  30 , and an aluminum film layer  20  sandwiched between the base layer  10  and the covering layer  30 .  
      The base layer  10  is a sheet member made of cotton, nylon, or polyester.  
      The aluminum film layer  20  is a thin film is prepared from an aluminum mixture, and covered on one side of the base layer  10  by bonding, spray-coating, or printing. The aluminum mixture is obtained by mixing a certain amount of aluminum powder with an assistant and TPU (Thermoplastic Polyurethane), PU (Polyurethane), TPE (Thermoplastic Polyester Elastomer), or PE (Polyester). The amount of the aluminum powder in the aluminum mixture is preferably at about 30%˜50%.  
      The covering layer  30  is a sheet member made of cotton, nylon or polyester and bonded to one side of the aluminum film layer  20  opposite to the base layer  10 .  
      A breathable warm-keeping fabric made according to this first embodiment has thin, light, flexible, breathable and waterproof characteristics. Further, the aluminum film layer can effectively isolate radiating dispersion of thermal energy and reflect body heat, enhancing the warm-keeping effect of the base layer and the covering layer.  
       FIG. 2  shows a breathable warm-keeping fabric made according to the second embodiment of the present invention. According to this embodiment, the breathable warm-keeping fabric comprises a base layer  10 , a covering layer  30 , an aluminum film layer  20  bonded in between the base layer  10  and the covering layer  30 , and a warm-keeping cotton layer  40  bonded in between the base layer  10  and the covering layer  30 .  
      The base layer  10  is a sheet member made of cotton, nylon, or polyester.  
      The aluminum film layer  20  is a thin film is prepared from an aluminum mixture, and covered on one side of the base layer  10  by bonding, painting, or printing. The aluminum mixture is obtained by mixing a certain amount of aluminum powder with an assistant and TPU (Thermoplastic Polyurethane), PU (Polyurethane), TPE (Thermoplastic Polyester Elastomer), or PE (Polyester). The amount of the aluminum powder in the aluminum mixture is preferably at about 30%˜50%.  
      The warm-keeping cotton layer  40  is bonded to one side of the aluminum film layer  20 .  
      The covering layer  30  is a sheet member made of cotton, nylon or polyester and bonded to one side of the warm-keeping cotton layer  40  opposite to the aluminum film layer  20 .  
      A breathable warm-keeping fabric made according to this second embodiment has thin, light, flexible, breathable and waterproof characteristics. Further, the aluminum film layer can effectively isolate radiating dispersion of thermal energy and reflect body heat, enhancing the warm-keeping effect of the base layer, the warm-keeping cotton layer and the covering layer.