Kilauan rendah berarti permukaannya gelap dan kusam, dan transparansi produk transparan rendah. Ada banyak alasan untuk kilau yang buruk. Umumnya, cacat permukaan gloss produk dapat dibagi menjadi tiga jenis:: kegagalan cetakan plastik, kondisi pembentukan yang tidak tepat dan penggunaan bahan baku yang tidak tepat.
Kegagalan Cetakan Injeksi
Karena permukaan bagian plastik adalah kemunculan kembali permukaan rongga cetakan plastik, jika ada goresan, korosi, micro-holes and other defects on the surface of plastic mold, it will be copied on the surface of plastic parts, resulting in bad gloss. If the surface of the cavity is oily and moist, the surface of the plastic parts will be darker. Karena itu, the surface of the cavity of the plastic mould should have a good smoothness. The surface of the die cavity must be kept clean and oil and water stains should be removed in time. The type and amount of release agent should be appropriate.
The temperature of plastic mould also has a great influence on the surface quality of plastic parts. Umumnya, different types of plastics have different surface glossiness under different temperature conditions, and injection mould temperature can not be too high or too low, which may lead to poor glossiness.
Tambahan, the plastic mold demoulding slope is too small, the thickness of the cross-section changes abruptly, the ribs are too thick and the gate and runner cross-section is too small, the shearing effect of the gating system is too large, the plastic mold exhaust bad and other faults will affect the surface quality of the plastic parts, resulting in poor surface gloss.
Improper use of raw materials
Inadequate raw materials can also lead to poor surface gloss of plastic parts.
Reasons: The excessive moisture content in the forming material and the condensation of volatile components in the cavity wall and the forming process of the plastic mould lead to the poor surface gloss of the plastic parts. Processing method: raw materials should be pre-dried.
The discoloration of raw materials or colorants results in poor gloss. High temperature resistant raw materials and colorants should be used.
The fluidity of raw materials is too poor, the surface of plastic parts is not compact, and the gloss is poor. Replace resin with better fluidity or add appropriate amount of lubricant and increase processing temperature.
When magazines are mixed in raw materials, new materials should be replaced in time.
Improper forming conditions
If the injection speed is too fast or too slow, the injection pressure is too low, the holding time is too short, the supercharger pressure is not enough, the nozzle hole is too small or the temperature is too low, the dispersion of fiber reinforced plastics is too poor, the cylinder temperature is too low, lelehan menjadi plastis dengan buruk, and the supply is insufficient, these conditions may lead to poor surface gloss of plastic parts. For the reasons, we should analyze the specific reasons, and then make corresponding adjustments.
Tentang JasonMould Industrial Company Limited
Jasonmould adalah pembuat cetakan Cina dari cetakan plastik- cetakan injeksi, cetakan die casting, cetakan tiup plastik, cetakan rotasi, medis cetakan injeksi plastik, dua tembakan cetakan injeksi plastik, masukkan cetakan, overmolding, cetakan injeksi logam, cetakan injeksi mikro, cetakan injeksi bubuk, cetakan injeksi keramik, cetakan injeksi cair, cetakan injeksi husky, cetakan rumah tangga, pengecoran cetakan, alat cetakan mati, cetakan khusus, cetakan cina, perkakas prototipe cepat rapid, perkakas prototipe plastik plastic, perkakas tekan pukulan, mati dan perkakas untuk bagian ponsel / ponsel cell, bagian otomotif, penyedot debu, alat isi ulang, telepon, mesin fotokopi, komputer, speaker multimedia, dan banyak produk elektronik dan peralatan rumah tangga lainnya. Dan juga produsen produk plastik, produsen cetakan Cina- bagian-bagian yang terbuat dari plastik, tangki air plastik, bola plastik, wadah plastik, gesper plastik, jangkar plastik, gantungan plastik, sendok plastik, pemasangan pipa plastik, gelas plastik, peralatan makan plastik, gelas plastik, botol-botol plastik, nampan plastik, wadah kosmetik plastik, kotak plastik, wadah makanan plastik, kursi plastik, tutup plastik, penutupan tutup plastik, tabung plastik, pipa air plastik, kenop plastik, tabung plastik, kotak utilitas plastik, rak plastik dan sebagainya.
Kontak:
Orang: James Yuan
Perusahaan: JasonMould Industrial Company Limited
Menambahkan: Desa LongGang,Kota LongXi,Kabupaten BoLuo,Kota HuiZhou,Provinsi Guangdong, Cina
Telp: 86-752-6682869
Surel: [email protected]
Situs: https://www.jasonmolding.com/custom-injection-molding/
