teknik pembuatan benang dan pembuatan kain jilid 2 smk

5.12.8.6 Tekanan Batang Penggulung Lap............................ 84
5.12.9 Pengujian Mutu Hasil................................................ 87
5.12.9.1 Penimbangan Berat Lap........................................... 87
5.12.9.2 Pengujian Nomor Lap............................................... 87
5.12.9.3 Pengujian Kerataan Lap ........................................... 87
5.12.9.4 Pengujian persen limbah .......................................... 88
5.12.10 Perhitungan Regangan............................................. 88
5.12.10.1 Susunan Roda Gigi Mesin Scutcher......................... 88
5.12.10.2 Sistim Hidroulik pada Mesin Blowing ...................... 91
5.12.10.3 Perhitungan Regangan............................................. 91
5.12.11 Perhitungan Produksi ............................................... 96
5.12.11.1 Produksi Teoritis....................................................... 96
5.12.11.2 Produksi Nyata ......................................................... 96
5.12.11.3 Efisiensi .................................................................... 97
5.12.11.4 Pemeliharaan Mesin Blowing .................................. 97
5.13 Proses di Mesin Carding ......................................... 98
5.13.1 Bagian Penyuapan ................................................... 101
5.13.1.1 Pelat Penyuap .......................................................... 102
5.13.1.2 Rol Penyuap (Feeder Roller).................................... 102
5.13.1.3 Rol Pengambil (Taker-in/Licher-in)........................... 103
5.13.1.4 Pisau Pembersih (mote knife) dan saringan bawah (under
grid) .......................................................................... 104
5.13.1.5 Tekanan pada Rol Penyuap ..................................... 106
5.13.1.6 Mekanisme pemisahan kotoran dari serat pada
Taker-in ................................................................... 107
5.13.2 Bagian Penguraian ................................................... 109
5.13.2.1 Silinder Utama .......................................................... 109
5.13.2.2 Pelat Depan dan Pelat Belakang.............................. 111
5.13.2.3 Top Flat .................................................................... 111
5.13.2.4 Saringan Silinder (Cylinder Screen) ........................ 112
5.13.2.5 Gerakan Pengelupasan (Stripping Action) ............... 113
5.13.2.6 Gerakan Penguraian (Carding Action) .................... 113
5.13.2.7 Pemisahan Serat Pendek dan serat Panjang........... 114
5.13.3 Bagian Pembentukan dan Penampungan Sliver...... 114
5.13.3.1 Doffer........................................................................ 115
5.13.3.2 Sisir Doffer (Doffer Comb) ........................................ 117
5.13.3.3 Rol Penggilas ........................................................... 119
5.13.3.4 Coiler ........................................................................ 120
5.13.4 Pengujian Mutu Hasil................................................ 123
5.13.4.1 Pengujian Nomor Sliver Carding .............................. 123
5.13.4.2 Pengujian Kerataan Sliver Carding .......................... 123
5.13.4.3 Pengujian Persentase waste .................................... 124
5.13.5 Setting pada Mesin Carding ..................................... 124
5.13.6 Pemeliharaan Mesin Carding .................................. 126
5.13.7 Perhitungan Regangan............................................. 126
5.13.7.1 Putaran Lap Roll....................................................... 126
vi