Injection Molding Can Improve The Appearance Of Injection Molded Parts
Cold/hot mold injection molding technology can greatly improve the aesthetics of injection molded parts. This process contributes to the improvement of the appearance of semi-crystalline and amorphous resin articles, particularly for amorphous resins.
In the injection phase, when the surface temperature of the mold exceeds the glass transition temperature of the amorphous resin, even if the surface material contacts the surface of the mold, the condensation phenomenon which is common in conventional injection molding production does not occur, thereby ensuring that the polymer can be injected during the injection phase. Free flow. As the cavity fills and the pressure in the cavity increases, the resin is forced to flow out, which contributes to the perfect replication of the cavity surface and improves the surface gloss of the article.
For filled materials, the resin that is forced to flow out forms a thin layer of polymer on the outer surface of the product, which coats the filler (glass fiber, carbon fiber or minerals, etc.), thereby improving the gloss of the product and reducing the surface. Roughness. Studies have shown that this method can increase the gloss by 50% to 90%.
In summary, the cold/hot mold injection molding process is very advantageous for improving the surface roughness of the article, which can improve the surface roughness of the glass fiber reinforced material article by 70%. Even for non-filled articles, the surface roughness can be improved by more than 20%.
1. Reduce visible weld lines, jets and flow marks
Cold/hot mold injection molding technology helps to improve the depth and visibility of the weld line. Using a test tool, SABIC Innovative Plastics processed three different materials using cold/hot die injection molding and conventional injection molding, respectively. Parts made using conventional injection molding technology have a surface weld line depth of between 6 and 13 μm, and the parts produced by the cold/hot mold injection molding process do not have a weld line at all, so the depth cannot be measured. . This groundbreaking improvement means that painting for certain products can be eliminated.
2. Reduce internal stress
Internal stress is often one of the main causes of warpage of the product, and in some cases it may also shorten the life of the part. In general, parts injection molded by conventional methods have high internal stresses, and if a well-known stress cracking accelerator such as carbon tetrachloride (CCl4) is used as a solvent for testing, cracking of the components may result. The parts injection molded by cold/hot mold technology have low internal stress, so even if CCl4 solvent is used, it will not cause cracking of the parts. Obviously, parts injection molded using cold/hot mold technology can be annealed prior to use.
Related Products
This is custom heading elementDescriptionFeedbackDescription Specification: Part Name Customized Rubber Compression Silicone Cover for Bluetooth Horn Speaker Service OEM OR ODM Part Material Silicone or rubber (NR, NBR,SBR,BR,IR,CR,EPDM,IIR,VITON(FKM),SIR,PU,ACM,CO,etc) Material Hardness Silicone about 5~90 Shore A; rubber about 10~90 Shore A Size Customized Shape Customized Color Customized according to Pantone colors Appearance as customer’s requirement Drawings 2D OR 3D acceptable Temperature Resistance -40~300 degree centigrade Technology Hot pressing molding or injection Molding Second Processing Vulcanizing/ Deburring/Silk-screen/Carving/printing Quality control internal QC control Part Feature 1.Oxidation , Chemical,oil, acid ,alkali , weather resistance 2. colorful ,Anti-aging,good flexibility, good elasticity Food grade material FDA or LFGB Package Normally PE bag+carton or customized as customer’s request Trade Term Ex-works; FOB Shenzhen/Guangzhou ; CIF Specification ROHS Directive Compliant Green Products What is our advantage? 1. Has sound and mature supporting supply chain 2. Lower mold costs…
Stamped Anchor Frame for Door ComponentsDescriptionFeedbackDescription Stamped computer housing made as clients’ drawing Die type: Progressive die. Raw materials: DC zinc coated, S/S, cold steel, copper, brass, aluminum, all variant raw material available. Surface finish: Powder coating Tooling lifespan: 1 million Feeding machine and stamping machine are used We have our own maintenance team…
Customizing Car Dashboard Covers With Injection MoldDescriptionFeedbackDescription Cavity/Core Material 718H, P20, NAK80, 2316,2738,Din2344,H13 and available Product Material ABS, PC, PP, PVC, POM, PMMA, PS, PE, PET, Rubber, Silicone, PA, PBT, PEI, etc. Base (HASCO) German , FUTABA Japan, DME US, LKM China or by requested Structure Double color injection mould, Solid…
Customizing Car Dashboard Covers With Injection MoldDescriptionFeedbackDescription TV Shell Injection Molding Product Name Injection Molding for TV Case Cover Material ABS, PC, PP, PS, POM, PMMA etc. Mould Base Material: LKM, FUTA, HASCO, DME, etc. or as per customer’s requirement. Surface treatment powder coating, polishing, chrome plating Packing Inner-Plastic Bag; Outer -Standard Carton Box. Usage…
Customizing Car Dashboard Covers With Injection MoldDescriptionFeedbackDescription Scale Model Cars Many miniature vehicles were originally aimed at children as playthings. But Precision-detailed miniatures made specifically for adults are a significant part of the market now. Fit Precision Mold Co., Ltd is specialized in producing all kinds of plastic scale model cars and accessories in different…
This is custom heading elementDescriptionFeedbackDescription Product Design Begin with good design FPM has the unique ability to contribute value at every phase of your product development via our global technical expertise. With state of the art design services, the right tools and a full staff of experienced people on hand, FPM can help…
Customizing Car Dashboard Covers With Injection MoldDescriptionFeedbackDescription CNC Plastic Machining Prototype Services Rapid prototyping (RP) technology is an advanced manufacturing technology developed in 90s, is one of the key technologies for the development of new products and manufacturing enterprises, to promote product innovation, shorten the development cycle of new products, improve product competitiveness has a…
Customizing Car Dashboard Covers With Injection MoldDescriptionFeedbackDescription FIT PRECISION MOLD CO., LTD specializes in providing good design and high-precision products at product developing and producing area. Our professional staff are experienced at tool/mold making service including plastic injection mold (mould),die casting mold (mould) and metal stamping mold (die); At the same time we are involved…