MASTER plastic rattan garden furniture mold temperature

Conventional injection molding melt filling time is very short , often simplified flow analysis isothermal filling , however , this simplification does not apply in the micro- injection molding . Micro- structure of small and micro injection molding products runner size , surface area to volume ratio, large cooling area per unit volume of the melt . When MASTER injection moulder into the micro- structure of the melt , the melt volume is small, contained fewer calories , then melt temperature will drastically reduce the temperature of the cavity wall , and the rapid formation of condensate layer . Polypropylene (PP) , for example, according to the formula ( 1 ) estimated from the thickness of the condensate layer micro- structure and micro- structure size is quite possible , and this will inevitably affect the filling micro- structure.Shen micro injection (MM) and micro- injection compression (M ICM) forming a micro structure of poly (methyl methacrylate) (PMMA) light guide . The mold temperature was found to have a significant impact repeatability of the microstructure , with the increase of temperature of the mold , the article microstructure repetitive greater improvement ; micro- injection compression , the mold temperature factor is also significantly affected , as the MASTER plastic mold company temperature increases, the repeatability of the microstructure article greatly improved , but there is no improvement in the former a large amplitude .Xie and other devices using visual observation of PP melt weld line formation in micro- flow channel , and according to the characteristics of the mold design mold heating and cooling devices. Found that when the mold temperature is below the polymer glass transition temperature will increase if the injection pressure, the micro- channel can not be fully populated ; when the mold temperature is higher than the glass transition temperature of the polymer , at a lower injection pressure the filling can be obtained preferably microfluidic channel . Other scholars have studied experimentally derived products mold temperature on the microstructure has a significant impact on the repeatability .

Micro-cavity insert manufacturing MASTER plastic rattan molding

Micro-cavity inserts production process as follows: ① A parts CAD drawing production reticle on a glass layer 10nm thick chromium plating film, according to the original definition of the light-transmissive and non-transmissive portion; ② wafer pretreatment by MASTER injection mold maker degreasing , polishing, pickling, washing purification methods of processing silicon surface to improve adhesion of the photoresist and the wafer; ③ aluminum evaporation, vapor deposition on a silicon wafer in a thickness of about 1μm aluminum film; ④ glue thrown in a silicon wafer uniformly coated with an aluminum layer of a positive photoresist film; covered ⑤ exposure, the wafer is coated with photoresist mask with a wavelength of ultraviolet light of 350 m through the photoresist mask selective irradiation; ⑥ development, the wafer was immersed in the developer after exposure, the photoresist was dissolved by the developer MASTER custom injection moulding and irradiated portions except
To get the same mask pattern; ⑦ to glue; ⑧ ICP etching, performed by plasma etching deep grooves; ⑨ to aluminum, the aluminum corrosion removal of the protective film, and ultimately obtained a partial structure micro-cavity inserts.

MASTER reaction injection moulding was first in the spring and Autumn period

Plaster mould was first in the spring and Autumn period, the ancestors with clay or stone carving out as a tool to coin money. Development up to now,the materials and processes are better than in MASTER injection molding supplies the past many advanced, in the material aspect, such as metal, resin, rubber, wood, plaster, several materials only gypsum is relatively easy to processing, no need of professional equipment, only need a knife or pieces of paper or wood, plus some soapy water as isolating agent can. Before making the plaster mold, people need to understand the properties of gypsum, gypsum powder is composed of a gypsum mine in quartz roasting by ground support, building materials stores a lot of big city in general can buy, their processing needs of small town of a class of area, is also the gypsum by grinding pestle, then roasted in a pot, burning fire, when the temperature to 800 degrees can be, but of course the quality no outside sell well. Nature when it comes to gypsum MASTER plastic container moldingpowder, chemically it is called semi  hydrated gypsum and burnt gypsum, it is mixed with water into a paste will soon after solidification, it is based on it by the flow of liquid into plasticity solid production molds and fire works, in the reaction process also generates heat. It should be noted, if too much moisture, will cause the solidified fastness variation condition, if need solid strength, should put the gypsum powder. Due to the condensation of solid gypsum can not be reused, so in the firing process must be fast, and be ready ahead of time and dosage of gypsum. Gypsum and gypsum products all have in common is absorbent, so people invented the slip casting method to make the blank, which is the removal of making plaster mold, another major use of gypsum.

Gypsum line, a good approach to enrich one's family

The current market demand, gypsum line products are often in short supply, gypsum production line put into smaller, faster capital turnover, market demand, and gypsum line has the advantages of simpleMASTER zplastic box mold production process, through simple learning can produce quality gypsum line of qualified products. So the building gypsum line production factory and a lot of good choice of entrepreneurial wealth. Plaster mould is the main tool of gypsum production line, gypsum line die mold Asian American various gypsum production line used for you, including gypsum line mold, mold, MASTER injection molding suppliesflat line lamp mold, mold, mold, spend horn relief Rome column mould, the wall mold, gardening sculpture mold and all kinds of custom shaped mold gypsum line, and used in the scraper, demoulding agent production tools and production materials. Asian American gypsum line mould provide excellent after sale service for you, to provide free production of various gypsum line and plaster products, to provide production technology consulting, as you remove any menace from the "rear".

The main structure of the mold design and fabrication

The experimental design and manufacture a set with heating, cooling, vacuum pumping microinjection molding Babyplast mold structure , the experiment used 6 / 10 micro- injection molding machine comes with mold . Micro injection molding mold body structure compared to conventional injection molding dies , there are many unique features, such as: smallCustom injection moulding  cavity size , specific surface area increases ; melt flowing through microfluidic channels , when the cavity condensation speed, easily lead fill incomplete , require high mold temperature. Standard mold temperature is generally set 20 ~ 50 ℃,, microinjection molding and mold temperature of up to 60 ~ 180 ℃. In order to meet the requirements of high mold temperature , while maximizing the heating rate , the use of electric heating rods . Thermocouple ( iron / constantan ) , the internal electric rods (6mm) Injection mold maker and micro- injection molding machine control software thermostat system . Such a high mold temperature, natural cooling is bound to increase the production cycle , so a multi-channel water cooling .Micro injection molding mold cavity mostly blind hole miniature structure and high precision machining and cooperation , relying on traditional parting surface ,Structural gap has been unable to fully exhaust . If the cavity where the gas can not be discharged , will cause hot spots , lack of filling defects , for setting the path and the corresponding vacuum seal structure . In addition , due to the small size of micro parts , light weight , thin wall , the top of the inappropriate use of conventional mechanical ejector , which uses suction device to complete the release of micro parts .