Silicone mold and mold lines-HongYe silicone

Silicone mold and mold lines   Choose mold silicone mold parting line mode selection and very important :     First, in order to facilitate modulo     Second, the parting line should be selected without affecting the overall effect of the product Third, do not affect the quality of products, such as the position of the parting line of high water products , sealing mold line when the material to be more prone to cracking products ; fourth step is to reduce the flow of operations , such as opening half of the mold . Figure - silicone mold     In order to prevent the flow around the silicone mold species or with wooden planks fixed range in a rule , when the mold opens the piece of wood and sludge are separated by that part of the first open , requiring between sludge and mold species there is no gap , sludge smooth surface . After completion of the above work to prepare , and then on the kinds of painted plaster mold or mold release agent on Vaseline or spray , smooth product requirements with a clean cotton cloth soaked in Vaseline evenly on the mold species, the mold for 30 minutes species to fully absorb Vaseline , and then a clean cotton cloth to clean the surface of the mold species require bright surface ; rather have the texture of the product as long as evenly coated with Vaseline on it will be better formulated silicone tune. When the direction of the irregular silica gel formulation should be agitated to mix the curing agent and silicone sufficiently minimize pumping to maintain a vacuum of the required air -0.1Mpa within the mixed rubber , smooth product is best when the adhesive coated first layer 7-8 seconds.     With a good silicone molding should be timely . The glue in a way trickle down to the highest parts of the mold species , let it flow , where the flow is not in place with a painting brush in place, if it is not only full piece molded silicone brush evenly throughout the product but also on clay . Each item of each brush at least three silica layer thickness of silica 1mm, the brush process silica required to brush after each additional layer of the cured layer , the third layer when the brush is applied to the top of a second layer layers of gauze to increase the strength of the silica gel . Entire mold silicone products based in part on the size of the different requirements of thickness control in 3-4mm, width no greater than the product width 60mm. Start silica gel solidification time was 20 minutes.     1 , the mother will die dry cleaned for smooth handling ( to play again or brushing a layer of mold release wax release agent )     2, 500-1000 grams of silicon rubber mold ( silicone molds , rubber molds , silicone rubber , silicone ) such as plastic pots containing spare ;     3 , after the hardener by weight ( typically 1.5-2.5 % ) were weighed container for mixing , stir ;     4 , depending on the situation ( in particular the first layer ) by adding a certain amount of silicone diluent. Until thoroughly mixed up , usually 3-5 minutes.     5 , the mixed silicon rubber mold ( mold silicone mold , silicone rubber , silicone ) with a hardening agent, the reaction was carried out at room temperature, i.e. , the release of low molecular weight alcohol and , as the alcohol molecules from the gel, to be at a negative pressure discharge bulbs -3 minutes. Also available ( depending on the mold may be the main division of operational experience ) without the aid of equipment 6 , multi- piece mold brushing should follow inner, middle and outer while curing appropriate. Curing agent is relatively low, the reaction time is lengthened , the reaction fully , like colloids , thus curing agent is preferably within a little more than outside . When brushing until the first layer ( inner layer ) dry and then brush a second layer . Operating time 30-50 minutes , removal time 10-15 hours. Curing time 24 hours . Note brushing first , the best , such as gauze after the two-story addition , which can greatly improve die life ( but must not use the glass fiber cloth , or likely to cause delamination leaving the entire mold scrap )     7 , three-dimensional perfusion mode , generally 10-15 hours curing as well.     8 , but also to make plaster or fiberglass coat the soft silicone mold making to support the completion of the soft mode     Parting line considerations:     1, the mold line options: Select the location does not affect the appearance of the product ; selection position after filling easy processing ; choose the location of the mold itself is easy form removal ; select products easily deformed position 2 , the production schedule must not rush blindly to increase the amount of hardener , otherwise it will greatly reduce the silicone mold life. Any question about our lifecasting products, feel free to contact with us(info@szrl.net ).