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| Read Full Article More hints article source Read Full Article website Ways to Make Rubber Stamps - Comparing Techniques of Manufacture The conventional red rubber stamp that everybody is acquainted with will have been manufactured in a vulcanizing press. The first rubber stamp vulcanizing press was patented in 1890 by Charles Schultze in New Orleans USA. Vulcanizing is today certainly one of probably the most cost helpful methods of creating rubber stamps for mass produced stamps. Each batch of stamps is created applying a mould. This strategy of manufacture is much more suited to stamp producing where exactly the same moulds are utilized more than and over again. Generating custom created stamps with a vulcanizing press requiring 'once only' moulds will drive the cost of manufacture up substantially. Producing the mould - prior to a mould can be produced it's essential to possess a master plate manufactured from metal or polymer, the master plate has the necessary relief (the artwork is raised) to produce an impression in the mould. Possessing a master plate created every single time a mould is Nike Free needed is what drives up the price of manufacture for vulcanized stamps. Pressing the master plate into a Matrix board creates the mould that could accept the rubber. Heat and pressure is applied towards the master plate and matrix board inside a Vulcanizing press. The Matrix follows the shape in the relief offered by the master plate, this then hardens on cooling. Making Rubber Stamps - Developing stamps is really a simple procedure when the mould is made. Raw rubber stamp gum is placed on prime of your mould after which placed inside the stamp press. Hydraulic pressure is placed upon the rubber plus the mould from within the stamp press causing the rubber to melt into the areas with the mould that include the pictures and text, curing and hardening takes about 10 minutes. The moment cured the sheet of rubber is pulled away from the mould and cut up into person stamps to be affixed to mounts. Expense of a vulcanizing technique is around $12,000 AUD Advantages - Low price of production for mass created stamps, fantastic ink transfer. Disadvantages - Cost of producing master plates and moulds for custom produced stamps. Laser Engraved Rubber Stamps The traditional raw rubber employed for vulcanizing stamp dies is rather unacceptable for the production of laser stamp dies, the laser process needs a very even thickness and blemish free surface to create an acceptable printed image from a stamp die. The rubber have to also be subjected to a specific curing procedurejust before it may be exposed to the elevated temperature of a laser beam. The depth on the engraving is determined by the laser speed, its wattage along with the density of your rubber. As an example, a 50 or 100W engraver will engrave the rubber deeper and more rapidly than a 25W machine, which could require a second pass to obtain a equivalent outcome. Usually supplied in an A4 size sheet type, a superb high quality laser rubber is needed for engraving stamp dies and should also have suitable compression strength and ink transfer properties. To assist the engraving method, it really is essential to get rid of the excess dust which can be consistently produced by the laser cutting action with an efficient exhaust filtration program. As pretty handful of, if any, CO2 laser engraving machines had been initially objective built for engraving and cutting rubber, installing and preserving an effective dust extraction program pays extended term dividends. Mirrors, lenses and any exposed bearing surfaces should be cleaned thoroughly as component of a regular maintenance program. Any neglect in this location are going to be detrimental to general difficulty absolutely free laser operation, because the construct up of dust and residue will impact operating efficiency and the high quality of the finished stamp die. Lasers are controlled directly from a computer, the computer software drivers supplied with lasers work with numerous graphic programs for instance CorelDraw. Approximate cost of a 25 watt Laser appropriate for stamp producing is $40,000 Advantages - Production is personal computer controlled, custom made stamps might be produced easily Disadvantages - High capital investment, maintenance fees and running will probably be considerably increased than vulcanizing or polymer procedures of manufacture. Liquid Polymer Rubber Stamps Converting rubber stamp polymer from a liquid into a solid to produce stamps is very fascinating. Polymer stamps are manufactured in between two sheets of glass working with precision controlled UV light which passes by means of a negative containing the stamp artwork solidifying the polymer. Unfavorable production has been simplified using the introduction of water based negative technologies, photographic chemical compounds for creating negatives are now a thing of your past. The first step in producing polymer rubber stamps will be to print your pictures, clipart or text onto Vellum, an nearly transparent paper like film. To generate good quality stamp artwork you have to use a laser printer, inks from bubble jet printers are translucent permitting UV light to pass where it should not. Water based negatives are very easily washed out right after getting exposed for a handful of minutes within a UV exposure stamp machine. Polymer contained within a sachet is now replacing the older cumbersome method of employing foam tape to create a dam and pouring of rubber stamp polymers, the sachets have also addressed the age old dilemma of removing air bubbles from the poured polymer. The unfavorable of the artwork and polymer sachet is sandwiched among two sheets of glass spaced 2-3mm apart which is then exposed inside the machine for a couple of minutes. As soon as you have got completed the exposure it is actually a uncomplicated approach of cutting open the sachet and washing away the excess unexposed polymer before returning the stamp die back towards the machine to get a ten minute curing. The moment the stamps are cured they can be cut up individually. Polymer sachets are available inside a range of sizes as much as A4 size. Processing time is about 30 minutes for a batch of polymer stamps. Price of polymer stamp producing machines range from $3,500 AUD for an Australian made unit designed especially for stamp producing up to high end imported units with laptop or computer controlled washout for $15,000 AUD. Advantages - Lower capital investment, polymers make nearly clear stamps creating them best for scrapbooking and card making. Stamp relief will be conveniently controlled in the course of exposure. Disadvantages - Early polymers didn't accept inks and also polymers readily available currently, this along with becoming new technologies brought on initial resistance to polymer stamps. Summary Most significant stamp manufacturers possess a mix in the above gear. The unmounted rubber stamp dies made with any of these manufacturing techniques might be cut up and affixed to straightforward hand stamps, dater stamps or self inking stamps. Craft stamps are ordinarily affixed to wooden blocks or in the case of polymer stamps affixed to clear acrylic blocks with adhesives or InstaGrip mounting mat. Several manufactures produces stamp mounts. Astron Industries in Australia manufacturer the clear hand stamp 'Vuestamp' and also distribute the Ideal range of self inking mounts. Other brands of self inking mounts are Trodat, Colop and Shiny. |