Abstract:
A band includes a split compound yarn and a rubber yarn woven together with the split compound yarn. The band is made by means of a process including a step of making the compound yarn, a step of providing the rubber yarn, a step of weaving the compound yarn together with the rubber yarn so as to form the band, and a step of washing the band so as to split the compound yarn.

Description:
FIELD OF THE INVENTION  
       [0001]     The present invention relates to wristbands and headbands.  
       BACKGROUND OF THE INVENTION  
       [0002]     Referring to  FIG. 3 , a conventional wristband  1  is woven from a cotton yarn  2  and a rubber yarn  3 . The cotton yarn  2  provides a soft feeling to a wrist. The rubber yarn  3  provides elasticity necessary for binding the wrist. However, several drawbacks are encountered in the use of the wristband  1 . Firstly, the wristband  1  provides poor ventilation for air. Secondly, the wristband  1  provides poor permeability and absorbency for water. Thirdly, the wristband  1  provides an inadequately soft feeling.  
         [0003]     The present invention is therefore intended to obviate or at least alleviate the problems encountered in prior art.  
       SUMMARY OF THE INVENTION  
       [0004]     It is an objective of the present invention to provide a band with good ventilation for air.  
         [0005]     It is another objective of the present invention to provide a band with good permeability and absorbency for water.  
         [0006]     It is another objective of the present invention to provide a band with an inadequately soft feeling.  
         [0007]     According to the present invention, a band includes a split compound yarn and a rubber yarn woven together with the split compound yarn. The band is made by means of a process including a step of making the compound yarn, a step of providing the rubber yarn, a step of weaving the compound yarn together with the rubber yarn so as to form the band, and a step of washing the band so as to split the compound yarn.  
         [0008]     Other objects, advantages and novel features of the invention will become more apparent from the following detailed description in conjunction with the attached drawings. 
     
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0009]     The present invention will be described via detailed illustration of the preferred embodiment referring to the drawings.  
         [0010]      FIG. 1  is a top view of a wrist wearing a wristband according to the preferred embodiment of the present invention.  
         [0011]      FIG. 2  is simplified view of a machine for making a compound yarn used in the wristband of  FIG. 1 .  
         [0012]      FIG. 3  is a top view of a wrist wearing a conventional wristband. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT  
       [0013]      FIG. 1  shows a wrist wearing a wristband  10  according to the preferred embodiment of the present invention. The wristband  10  is woven from a split compound yarn  11  and a rubber yarn  12 .  
         [0014]     To make the wristband  10 , at a first stage, the compound yarn  11  and the rubber yarn  12  are made separately. At a second stage, the compound yarn  11  and the rubber yarn  12  are woven so as to form the wristband  10 . At a final stage  12 , the wristband  10  is dyed and washed so that the compound yarn  11  is split.  
         [0015]     The split compound yarn  11  of the wristband  10  provides advantageous features such as good ventilation for air, good permeability and absorbency for water and an inadequately soft feeling.  
         [0016]     The third stage is closely related to the first stage. That is, the splitting of the compound yarn  11  in the third stage is closely related to the making of the compound yarn  11  in the first stage. Therefore, the first stage will be described in detail.  
         [0017]      FIG. 2  shows a machine for making the compound yarn  11 . The machine includes a first melting and extruding block  20 , a second melting and extruding block  25 , a metering pump  30 , a spinning block  35 , a cooling and curing block  40 , an extending block  50 , a heating and setting block  60  and a reeling block  70 .  
         [0018]     First material  13 , such as nylon is provided to the first melting and extruding block  20 . The first material  13  is molten in the first melting and extruding block  20 . Then, the molten first material  13  is extruded from the first melting and extruding block  20 .  
         [0019]     Second material  14 , such as polyester is provided to the second melting and extruding block  25 . The second material  14  is molten in the second melting and extruding block  25 . Then, the molten second material  14  is extruded from the second melting and extruding block  25 .  
         [0020]     The molten first material  13  and the molten second material  14  are both provided to the metering pump  30 . The molten first material  13  and the molten second material  14  are provided from the metering pump  30  to the spinning block  35  at different predetermined rates.  
         [0021]     In the spinning block  35 , the molten first material  13  and the molten second material  14  are both spun into filaments. The filaments are all provided from the spinning block  35  to the cooling and curing block  40 .  
         [0022]     In the cooling and curing block  40 , the filaments are cooled and cured. Then, the filaments are all provided from the cooling and curing block  40  to the extending block  50 .  
         [0023]     In the extending block  50 , the filaments are compound so as to form a compound yarn. The compound yarn is extended so that its diameter is reduced to a desired value. Thus, the compound yarn becomes the compound yarn  11 . Then, the compound yarn  11  is provided from the extending block  50  to the heating and setting block  60 .  
         [0024]     In the heating and setting block  60 , the compound yarn  11  is heated and set. Then, the compound yarn  11  is provided from the heating and setting block  60  to the reeling block  70 .  
         [0025]     In the reeling block  70 , the compound yarn  11  is reeled.  
         [0026]     To facilitate the splitting of the compound yarn  11 , a chemical step or a mechanical step may be taken in the making of the compound yarn  11 .  
         [0027]     The chemical step is taken in the melting of the first material  13  or the second material  14 . To this end, nucleated agent such as CaSiO 3 , SiO 2  and MoS 2  may be added to the first material  13  or the second material  14 . Thus, the first material  13  crystallizes easier than the second material  14 , or vice versa. Hence, the filaments of the first material  13  are easily split from the filaments of the second material  14  as the wristband  10  is dyed and washed.  
         [0028]     Alternatively, splitting agent such as superfine Teflon may be added to the first material  13  or the second material  14 . Thus, the filaments of the first material  13  are easily split from the filaments of the second material  14  as the wristband  10  is dyed and washed.  
         [0029]     Alternatively, the first material  13  or the second material  14  is made via mixing 20-80% of amorphous polymer with 80-20% of crystal polymer. Thus, the contractibility of the first material  13  is much higher than that of the second material  14 , or vice versa. Hence, the filaments of the first material  13  are easily split from the filaments of the second material  14  as the wristband  10  is dyed and washed in hot water.  
         [0030]     Alternatively, the first material  13  and the second material  14  may be molten at carefully calculated temperatures. Thus, the stickiness of the first material  13  to the second material  14  is low. Hence, the filaments of the first material  13  are easily split from the filaments of the second material  14  as the wristband  10  is dyed and washed.  
         [0031]     The mechanical step is taken in the spinning of the compound yarn  11 . In the mechanical step, the compound yarn  11  reeled at a rate of 3000-8000 meter per minute. Thus, the first material  13  crystallizes at a rate much different from a rate at which the second material  14  crystallizes. Hence, the filaments of the first material  13  are easily split from the filaments of the second material  14  as the wristband  10  is dyed and washed.  
         [0032]     The present invention has been described via detailed illustration of the preferred embodiment. Those skilled in the art can derive variations from the preferred embodiment without departing from the scope of the present invention. Therefore, the preferred embodiment shall not limit the scope of the present invention defined in the claims.