1. Short injection Failure analysis and troubleshooting methods:(1) Improper control of process conditions. Should be adjusted appropriately.(2) Injection capacity of injection molding machine is less than weight of plastic part. A larger injection molding machine should be used.(3) Cross section of runner and gate is too small. Should be increased appropriately.(4) Flow distance of meltContinue reading “Common injection molding defects of polypropylene (PP)!”
Tag Archives: moulding
High-gloss injection molding technology: creating a “glossy appearance” for injection mold
How to produce shell products with no melt marks, no flow marks, no flow lines, no sink marks, and high gloss surface is particularly important for flat-panel TVs, computer LCD monitors, air conditioners, and automotive interior parts. Use of high-gloss injection molding technology can solve this problem well. Process principle of high-gloss injection: Mold isContinue reading “High-gloss injection molding technology: creating a “glossy appearance” for injection mold”
Design of injection mould for guide vane of curtain bead automatic machine
When designing an injection mold, demolding method affects mold structure. Main manifestation is that selection of parting method needs to consider convenient demoulding of plastic part, simple mechanism and convenient processing of mold parts. When plastic part has multiple characteristics and demolding direction is different, if conventional sliding block, inclined push rod and other mechanismsContinue reading “Design of injection mould for guide vane of curtain bead automatic machine”
How many of these injection molding machines have mold opening failures?
1. Injection molding machine can’t open mold again. There is pressure, speed, oil to cylinder, and pressure is 120kg. Why do you often cannot open mold? 1 Is oil seal of mold opening cylinder damaged?2 Is mechanical part of clamping mechanism stuck?3 Check mold opening valve; see if spool is not in place?4 Are speed, pressure,Continue reading “How many of these injection molding machines have mold opening failures?”
Mold replacement instructions
Section 1 Preparation before mold change According to production plan of workshop, make preparations before changing mold. 1. Put on a safety helmet, prepare mold removal tools such as rags, rust inhibitors, and wrenches; 2. Check mold to be installed: (1). According to layman’s size of mold, choose machine that can be installed (in general, machineContinue reading “Mold replacement instructions”
Key points of injection mold design for memory bottom shell + 3D
Product diagram of memory bottom case is shown in Figure 1. Maximum size of product is 170.75 mm * 121.20 mm * 38.6 mm, average thickness of plastic part is 3.2 mm, material of plastic part is ABS, shrinkage rate is 1.005, and weight of plastic part is 57.64 grams. Technical requirements for plastic parts are that there mustContinue reading “Key points of injection mold design for memory bottom shell + 3D”
Design of Injection Mould for Cream Bottle
With rapid economic development, cosmetics and skin care products have gradually become daily consumer goods in life. In competitive cosmetics consumer market, novel cosmetic packaging is one of main reasons for attracting consumers to buy, and it is also an important form of cosmetics value. There are a lot of advertising and its packaging isContinue reading “Design of Injection Mould for Cream Bottle”
7 points that must be considered in plastic injection molding
Setting of injection molding process should consider 7 factors such as shrinkage, fluidity, crystallinity, heat-sensitive plastics and easily hydrolyzed plastics, stress cracking and melt fracture, thermal performance and cooling rate, and moisture absorption. First. Shrinkage rate Form and calculation of thermoplastic molding shrinkage are as mentioned above, factors that affect thermoplastic molding shrinkage are asContinue reading “7 points that must be considered in plastic injection molding”
In-depth talk about warpage deformation of injection molded products
1. Warpage deformation It means that shape of injection molded product deviates from shape of mold cavity, which is one of common defects of plastic products. There are many reasons for warping and deformation, and it is often impossible to solve it by process parameters alone. Combining relevant information and actual work experience, following brieflyContinue reading “In-depth talk about warpage deformation of injection molded products”
Hot runner system installation method and seven skills to reduce defects in mold processing
Hot runner system is an important part of plastic mold production equipment. Hot runner system generally consists of a hot nozzle, a manifold, a temperature control box and accessories. Hot runner system whose mold performance meets requirements must be based on correct design and installation of hot runner. Following will introduce common installation methods ofContinue reading “Hot runner system installation method and seven skills to reduce defects in mold processing”
PLASTIC MOULD MANUFACTURER 