Bread is made from a flavored dough.  The equilibrium humidity of the bread core is about 90%, so it is easy to lose moisture and become harden. The balance humidity of bread crust is relatively low, which is easy to absorb moisture and become wetted under wet conditions。Therefore, wrapping materials for bread should have moderate moisture resistance.   

The ideal packaging materials should meet the following requirements：1  Attractive appearance；2  Adapt to automatic packaging machine operation；3  Sufficient strength；4 Low cost；5 Suitable moisture resistance. And the twist ties used to bind bread bags is just right for these characteristics.

The colored bread twist ties include Kraft paper twist ties, metallic twist ties and PET twist ties. Always the width of the colored bread twist ties is made in 4mm and cut in different length of 10cm, 12cm, 15cm and etc. And the different color can be used to mark different date. For example, red color twist ties is standing for Monday,blue color ties is for Tuesday, green twist ties is for Wednesday, yellow twist ties is for Thursday, white twist ties is for Friday, pink for Saturday and purple for Sunday. A steady using of the colors, people may have a clear remark on the week days according to the colored bread twist ties. This is the most economic packing way of the bread bags.

People also have some design on the colored twist ties. The performance of the twist ties can be printed with words or image. One of the more popular styles nowadays is printing “ Especially for you” words on the twist ties. The bottom of the twist ties can be made in different color, and the words can also be made in matched color. And for more elaborate design is printed with lovely image, such as heart, star, flower and stripes. It gives people more choices and decorative.