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The classic red rubber stamp that everyone is familiar with will have been manufactured in a vulcanizing press. The initial rubber stamp vulcanizing press was patented in 1890 by Charles Schultze in New Orleans USA. Vulcanizing is today one of probably the most cost successful procedures of generating rubber stamps for mass produced stamps. Each and every batch of stamps is made applying a mould. This technique of manufacture is a lot more suited to stamp making where exactly the same moulds are employed over and over once more. Generating custom created stamps with a vulcanizing press requiring 'once only' moulds will drive the cost of manufacture up substantially.
Generating the mould - before a mould is often created you must have a master plate manufactured from metal or polymer, the master plate has the necessary relief (the artwork is raised) to make an impression in the mould. Having a master plate made every time a mould is <a href="http://www.beatbydreaustralia2012.com">Beats By Dre</a> essential is what drives up the price of manufacture for vulcanized stamps. Pressing the master plate into a Matrix board creates the mould that may accept the rubber. Heat and pressure is applied for the master plate and matrix board inside a Vulcanizing press. The Matrix follows the shape with the relief supplied by the master plate, this then hardens on cooling.
Making Rubber Stamps - Developing stamps is actually a very simple approach when the mould is made. Raw rubber stamp gum is placed on top rated in the mould and after that 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 in to the places on the mould that contain the pictures and text, curing and hardening takes about 10 minutes. As soon as cured the sheet of rubber is pulled away from the mould and cut up into individual stamps to be affixed to mounts.
Cost of a vulcanizing technique is approximately $12,000 AUD
Positive aspects - Low price of production for mass made stamps, very good ink transfer.
Disadvantages - Cost of producing master plates and moulds for custom created stamps.
<b>Laser Engraved Rubber Stamps</b>
The regular raw rubber utilised for vulcanizing stamp dies is very unacceptable for the production of laser stamp dies, the laser process calls for a very even thickness and blemish no cost surface to create an acceptable printed image from a stamp die. The rubber have to also be subjected to a certain curing methodprior to it can be exposed for the elevated temperature of a laser beam.
The depth with the engraving is determined by the laser speed, its wattage as well as the density of the rubber. For instance, a 50 or 100W engraver will engrave the rubber deeper and quicker than a 25W machine, which could call for a second pass to accomplish a related result. Typically supplied in an A4 size sheet type, a great superior laser rubber is needed for engraving stamp dies and should also have appropriate compression strength and ink transfer properties.
To assist the engraving process, it's necessary to get rid of the excess dust which can be constantly produced by the laser cutting action with an effective 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 keeping an effective dust extraction program pays lengthy term dividends. Mirrors, lenses and any exposed bearing surfaces need to be cleaned thoroughly as part of a regular upkeep system. Any neglect in this area will likely be detrimental to overall difficulty totally free laser operation, because the build up of dust and residue will influence operating efficiency as well as the high quality on the completed stamp die. Lasers are controlled straight from a computer, the computer software drivers supplied with lasers function with several graphic programs for instance CorelDraw.
Approximate price of a 25 watt Laser appropriate for stamp making is $40,000
Advantages - Production is laptop controlled, custom produced stamps may be made conveniently
Disadvantages - High capital investment, upkeep expenses and running might be substantially greater than vulcanizing or polymer strategies of manufacture.
<b>Liquid Polymer Rubber Stamps </b>
Converting rubber stamp polymer from a liquid into a solid to make stamps is quite fascinating. Polymer stamps are manufactured between two sheets of glass working with precision controlled UV light which passes by means of a unfavorable containing the stamp artwork solidifying the polymer. Negative production has been simplified together with the introduction of water based unfavorable technologies, photographic chemical compounds for producing negatives are now a issue in the past.
The very first step in creating polymer rubber stamps is usually to print your images, clipart or text onto Vellum, an nearly transparent paper like film. To generate top quality stamp artwork it's essential to use a laser printer, inks from bubble jet printers are translucent permitting UV light to pass exactly where it should not. Water based negatives are quickly washed out just after becoming exposed for a few minutes in a UV exposure stamp machine.
Polymer contained inside a sachet is now replacing the older cumbersome strategy of employing foam tape to make a dam and pouring of rubber stamp polymers, the sachets have also addressed the age old difficulty of removing air bubbles from the poured polymer.
The negative of one's artwork and polymer sachet is sandwiched between two sheets of glass spaced 2-3mm apart which can be then exposed in the machine to get a couple of minutes. As soon as you may have completed the exposure it is a basic approach of cutting open the sachet and washing away the excess unexposed polymer ahead of returning the stamp die back to the machine to get a 10 minute curing. As soon as the stamps are cured they're able to be cut up individually. Polymer sachets are out there inside a range of sizes as much as A4 size.
Processing time is about 30 minutes to get a batch of polymer stamps.
Price of polymer stamp producing machines range from $3,500 AUD for an Australian produced unit designed specifically for stamp creating as much as high end imported units with laptop controlled washout for $15,000 AUD.
Advantages - Lower capital investment, polymers make pretty much clear stamps creating them perfect for scrapbooking and card producing. Stamp relief is often simply controlled through exposure.
Disadvantages - Early polymers didn't accept inks and also polymers accessible right now, this together with becoming new technologies brought on initial resistance to polymer stamps.
<b>Summary</b>
Most massive stamp producers have a mix of the above gear. The unmounted rubber stamp dies made with any of those manufacturing procedures can be cut up and affixed to uncomplicated hand stamps, dater stamps or self inking stamps. Craft stamps are usually affixed to wooden blocks or within the case of polymer stamps affixed to clear acrylic blocks with adhesives or InstaGrip mounting mat. A variety of manufactures produces stamp mounts. Astron Industries in Australia manufacturer the clear hand stamp 'Vuestamp' and also distribute the Perfect range of self inking mounts. Other brands of self inking mounts are Trodat, Colop and Shiny.
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