Crystal cosmetic bottle injection molding production line is very simple. Though the flow rate of acrylic is worse than PS and ABS, and the melt viscosity is more sensitive to temperature changes. During the Cosmetic Bottle injection molding process, we can adjust the injection temperature to find the best melt viscosity. PMMA is an amorphous polymer, which melting temperature is greater than 160°C and the decomposition temperature is up to 270°C. 1. Acrylic Material Processing Before Injection Molding The acrylic has a certain degree of water absorption about 0.3-0.4%, but the injection molding process needs about 0.1% to 0.04%. It will causes bubbles, gas lines, and reduced transparency in the melting if the moisture is high. So the acrylic must be dried before injection molding. Normally, the drying
Read more →Guanxin Plastic Machinery have lots of experience in the PET preforms manufacturing process. We offer our customers professional PET preform production line with lots of optimized functions, manufacturing process management, production management and quality control systems. We provide you a turnkey solution for full process of Dehumidification Drying raw materials, quantitative additive color mixing machine, rapid and stable injection molding output of bottle preform, PET preform mold with hot runners, rapid cooling robot mechanism; Total production cost down with high productivity, and lowest blow bottle defect rate of only 0.5%. This PET Preform Production Line is mainly set up by a 350 ton PET preform injection molding machine with servo motor and electronic gear box Synchronous Charging system, and a 64 cavities high speed PET preform injection mold
Read more →Guanxin Moved Head Office to Guangzhou City in 1st Jan. 2021. The New Year and a New Beginning for Guanxin Plastic Machinery. The Head office address is as below: Room 401, Longxin Mansion，Liwan District, Guangzhou, Guangdong Province, China Phone: (0086) 020 765-4321 Mobile: (0086) 139 2508 7612 Contact: Mr Alvin Chan Welcome to visit us and inspect our machine for further cooperation.
Read more →20 Liter Plastic Paint Bucket is a bit special as the thickness is about 1.85mm but the material flow path is about 600 mm. It means the flow path is more than 300 times comparing it`s thickness. So the manufacturing process requires a high injection speed. We will need a optimized Plastic Bucket Moulding Machine to produce the 20 Liter Plastic Paint Buckets. 20L plastic paint kettle is most made with only one cavity with a 650 Ton dedicated injection molding machine. This plastic paint kettle molding machine should have a high injection speed of about 500-600 mm/s, the open stroke should be bigger than 750mm, with a precise mold open controlling system if you may run an in-mold-labeling system in the future. Click here to check more
Read more →What is L/D Ratio L/D ratio is the ratio of the length of injection molding screw (L) to it`s outer diameter (D). Frankly speaking, L/D ratio is a very important parameter to a plastic injeciton molding machine. As it affect a lot on the injection machine`s melting performence and final plastic injection molding products quality. As an professional plastic molding machines manufacturer, we would like to explain it more to help our customers to under plastic injeciton molding machines screw better. What is L/D Ratio in Injection Moulding Machine Length-to-diameter ratio or L/D ratio in injection molding machine is the nominal length of the screw divided by the nominal diameter in consistent units. Or we can simply say the L/D ratio is the flighted length of the screw
Read more →The daylight in injection molding machine is space or distance between fixed platen and moving platen during open and close clamping on a injection molding machine. The minimum and maximum daylight in injection molding machine determines the sizes of the items it can make. The maximum daylight has to accommodate height of moving half of mould, height of moulded part, minimum and enough clearance for removal of moulded part and height of fixed half of mould. Formula to calculate the day light of the toggle injection molding machines: Maximum daylight = Maximum mould height + mould open stroke. Minimum daylight = Minimum mould height + mould open stroke. With Hydraulic clamp machine, Maximum daylight = Minimum mould height + mould open stroke. If shut mould height is more
Read more →Most people in plastic moulding industry may have the same question: how to calculate injection moulding machine tonnage or how to calculate clamping force in injection molding? This is a very common question if you are in the plastic inejection molding industry. So how do you calculate injection molding tonnage? Before answering the question about clamping force calculation, we should make it clear for some basic definition of the injection machine`s molding tonnage and how it comes from and what it supports during the injection molding process. What is tonnage in injection Moulding machine? The “tonnage” is the maximum of clamping force that a injection molding machine can offer to keep the the injection tool tightly closed during the injection process. This clamping force ensure the mold won`t
Read more →The 2nd China (Cangzhou) Plastic Hollow Plastic Products and Plastic Machinery Expo in 2020 (abbreviated as: North China Plastics Exhibition PHPE) will be held in Cangzhou International Convention and Exhibition Center on September 15-17. Our company, Foshan Guanxin Plastic Machinery Co., Ltd, as the leader of special plastic machines, will bring PET preform injection molding machineto the exhibition. Bringing optimized injection molding solutions for plastic packaging products to the North China regional market. The second “China (Cangzhou) Plastic Hollow Products and Plastic Machinery Expo” (North-PLAS) is a northern plastics industry event organized by the Cangzhou City People’s Government, Dusheng Town People’s Government and China Plastics Processing Industry Association. It will be held in Cangzhou International Convention and Exhibition Center on September 15-17, 2020. The plastics industry is a
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