| 摘要 |
A process whereby artificial rawhide comparable in qualities to natural rawhide can be produced. After pre-treatments such as washing with water, liming, bleaching, etc., rawhide is roughly cut into pieces (about 10 cmx10 cm) and then further finely cut with the use of a chopper and a micro-cutter to thereby prepare collagen fibers. Next, water, a collagen fiber powder and gelatin are added thereto to give a sol or a gel having a moisture content of 60 wt % to 80 wt %. Then it is extruded into a sheet, using a screw extruder at 30° C. or below and dried, thereby giving artificial rawhide. This artificial rawhide in the form of a sheet is cut into strips in a predetermined size. Then, each strip is rolled in the width direction and tied in the length direction. Thus, a bone-shape chewing gum for dogs can be obtained. |
