Gloss rendah berarti permukaannya gelap dan kusam, dan transparansi produk transparan rendah. Ada banyak alasan untuk gloss yang buruk. Cacat permukaan gloss dari produk umum dapat dibagi menjadi tiga jenis berikut:: kegagalan cetakan plastik, kondisi cetakan yang tidak tepat, penggunaan bahan baku yang tidak tepat.
Kegagalan cetakan injeksi
Karena permukaan bagian plastik adalah reproduksi permukaan rongga cetakan cetakan plastik, if the surface of the plastic mold has scratches, korosi, micropores and other defects, it will be copied on the surface of the plastic parts, producing bad luster. If the surface of the cavity is oily and moist, the surface of the plastic part will be dark. Karena itu, the cavity surface of plastic mould should have good finish. The surface of 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 mold also has a great influence on the surface quality of plastic parts. Umumnya, different types of plastics have different surface gloss under different temperature conditions, and the injection mold temperature cannot be too high or too low, which may lead to poor gloss.
Tambahan, the plastic mold demoulding slope is too small, the section thickness is abrupt, the rib is too thick, the gate and runner section are too small, the shear effect of gating system is too large, and the plastic mold exhaust is poor, dll., all of these will affect the surface quality of plastic parts, resulting in poor surface gloss.
Improper use of raw materials
Raw materials not meeting the requirements will also lead to poor surface gloss of plastic parts.
Sebab: the moisture content in the molding material is too high, and the volatile components condense in the cavity wall of the plastic mold and in the molding process, resulting in poor surface gloss of plastic parts. Treatment: raw materials should be dried in advance.
Discoloration of raw materials or colorants results in poor gloss. High temperature resistant materials and colorants should be used.
The fluidity of raw materials is too poor, and the surface of plastic parts is not compact and glossy. Change the resin with better fluidity or add proper amount of lubricant and increase the processing temperature.
If the magazine is mixed with raw materials, new materials shall be replaced in time.
Improper molding 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, the melt plasticization is not good, and the supply is insufficient, all these conditions can lead to poor surface gloss of plastic parts. For the causes should be specific analysis of 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/
