Check out popular hot melt and pur adhesives for bookbinding applications. A4 portrait book spine length 297 mm, thickness 20 mm. Pur glue adhesives are strong, flexible, and once cured can withstand temperatures ranging from 40f to over 140f. Pur glue guns dispense heated polyurethane pur hot melt from heated adhesive cartridges. Pva glues are acid free and used in libraries to repair books. Some pur cartridges are even equipped with a uv indicator for quality control and to ensure that the adhesive has not been compromised before use. Book spines that make use of pur are prepared in much the same way as a traditional evabound book, utilizing a variety of notching, roughing. Pur glue reacts with moisture to crosslink molecules for improved performance characteristics. Put simply, the binding really only differs by way of the type of glue used. Cant locate your manual for the nordson problue andor durablue glue melter. Invented in the 1930s, pur was first used as a cheaper alternative to costly rubber during world war ii.
Click on the bars below to see more information on pur adhesive. All of our hot melt adhesives are formulated to provide desired adhesion, fast set speed, open timebonding range, and heat andor cold resistance properties. If you are troubleshooting an issue and still are unable to locate the problem, please call keystone for free technical assistance. Polyurethane reactive pur is the most durable book binding glue available. The differences between perfect and pur binding xcaliba.
Our liquid pur adhesives are designed for the assembly of complex structures and furniture. Pur polyurethane reactive bonds differently with paper than eva ethylene vinyl acetate. Adding another layer of glue to the book block later and attaching the cover works fine. Hot melt adhesives adhesivo hot melt hot melt glue dispensing. You have clicked a page that seems to be very popular.
Durapro branded products are high performance adhesives, coatings, tapes and additives for industrial and distribution customers worldwide. Pur glue bonds to the book through a chemical reaction. Pur glue is the most flexible as well as strong adhesive used by most of the book binding experts. We at pfp are aware of the growing importance servicing your equipment and can offer you a variety of capabilities on print finishing equipments. With open times of minutes, hot melt pur provides a fast processing option for shops that have a lot of demand. Technical data sheet moisture cure polyurethane wood. Glue machinery corporation has a huge selection of adhesives available, such as permanent pur. Hot melt adhesives are solventfree, thermoplastic polymers used for quick bonding and gap filling. These products can be custom formulated to meet the specific process and end use demands of our customers. Alibaba manufacturer directory suppliers, manufacturers. Firstly, it will not remelt or break down in extreme environments. It uses pur glue instead of the more commonly used eva hot melt. If you want to use this more than once be sure to put vasoline on the tip and threads as the directions say. Sometimes they add a few letters to indicate the color, such as blk for black, or bl for blue.
Pur is chosen over standard hotmelt adhesives for many reasons, the most important of which are its superior adhesion and the ability of a purbound book to lie flat when open. Be forewarned, this glue might not be the easiest to make. Nordson electric or pneumatic, contact or noncontact applicators for accurate, repeatable adhesive application support flexible pattern dispensing and reliable operation. The thickness of the application is critical to good results. These adhesives can be used in bookbinding jobs ranging from diy to large scale. Nordson duradrum dd 200 pur glue system year 21010.
Hot melt adhesive is applied as a hot bead, dot or molten film and forms into a solid material when the hot melt cools down below its softening point. Pur book binding includes premelting, side and spine gluing and end papering for bound books or book blocks. With the fastbind pureva xt, making a soft cover book is very easy. Or whether the grillhead is mounted on a post, cart or patio pedestal. Contact supplier auto high speed high quality 60sa4 pur glue. The polar nature of polyurethane molecule allows it to adhere to uvcured coatings, films, as well as to traditional uncoated and claycoated papers. This technique uses eva ethylene vinyl acetate to glue the pages. Pur adhesive was approved for otabind style binding also. Each container of durapros adhesive container is the result of years of. Popular pur a3 glue book binding machine, glue book binder zl2000lp.
Perfect binding uses ethylene vinyl acetate eva adhesives whereas pur uses polyurethane reactive pur adhesives. Eva hot melt glues still have their place in bookbinding, especially when it comes to binding threadsewn books, as the thicker glue allows for greater penetration into the spine area of the folded. When deciding what kind of adhesive to use for your manufacturing, packaging and labeling needs, you may consider a moisturecuring polyurethane hot melt adhesive pur. Genuine nordson parts and service kits support routine maintenance and maintain hot melt systems at optimum performance helping reduce costs and extend equipment life. It is far superior to ethylene vinyl acetate eva or any other. Glue options for perfect bound paperback books diy. Today pur adhesive is gaining traction in the marketplace as publishers and consumers desire books that will keep the pages bound together more securely over the life time usage of the book. Permanent pur hot melt adhesive glue machinery corporation. Well, the pur adhesive offers superior adhesion over eva and also the ability for the bound book to lay flat without compromising the binding strength.
You can roughen the paper if you have coated or heavy stock. The repairs you make with methylcellulose glue can be reversed in the future if need be. Pur adhesives cure by cross linking via a chemical reaction with moisture contained in the paper stock or the surrounding air. The properties designed within the adhesive draws moisture out of the air. Commonly known as glue sticks, these adhesives cure physically instead of chemically and may require temperatures from 120 to 180 degrees fahrenheit for application. Ifs has a full line of hot melt adhesives that bond the most difficult substrates. Dura pro products are certified as environmentally friendly and are customized to your specific needs, using the latest innovations in chemistry. Book spines that make use of pur are prepared in much the same way as a traditional evabound book, utilizing a variety of notching, roughingequalizing heads in order to create fiber. Developed for perfect binding in 1989, polyurethane reactive pur adhesive has become the overwhelming preference within the binding industry. Glue options for perfect bound paperback books diy bookbinding. We are authorized distributors for henkel adhesives, hb fuller glue, bostik and ifs durapro. In fact, it is nearly impossible to pull a page out of.
Hotmelt glue hotmelt glue is suitable for books with a starting spine width of 3mm and paper up to a maximum weight of 170gsm. Customers who want business card booklets bound often choose this option. High quality glue machines and hot melt dispensing equipment. Durabond makes a version for bookbinding and 3m has a line called scotchweld. Hot melt adhesives are a good choice where ventilation is a concern and for. Pur glue is more durable and flexible than eva glue and, once the glue has set, it is almost impossible to tear a page out of a purbound book. According to chuck cline, technical services manager at national starch and chemical company one of the countrys leading glue manufacturers, pur. Our most popular product for bookbinding is power adhesives tec 1241f. This product was formulated as a high quality spine glue. Cold emulsion binding, double shot hot melt binding, otabind, and sewn book block w soft cover. The adhesive then will bond with these fibers during the curing process. The gorilla version is brown, and every cover i have used it on becomes discolored as the glue soaks in.
The fundamental difference between the two types of binding is the adhesive used in the process. It was originally purchased to glue stained glass into a window, it did that job well and has done everything else equally as well. Page pulls using pur adhesive can be anywhere from 50% to 70% higher than books produced with eva. E6000 glue has worked on everything ive used it on so far. As with eva, pur adhesive requires the backbone of the book to be prepared in much the same way, utilizing milling knives, notching heads. Glue slugs are usually sealed inside the machine so they can last as long as a month or two before the book quality will degrade. It is far superior to ethylene vinyl acetate eva or any other adhesives used in traditional perfect binding. Pur binding is a variation of perfect book binding. The adhesive forms a crosslinked, thermoset adhesive bond very quickly when exposed to air. I recommend using a transparent pur glue for books. Pur adhesives by 3m and titebond can also be formulated with special properties, such as having a higher level of flexibility, better application temperature heat stability or having very thick or thin glue lines.
Why pur adhesive is better than eva adhesive for book binding. Different glue formulas will cure at different rates so consult your specific manufacturer. It is very important to understand the main differences of the two important binding technologies in. Pur adhesive provides a binding at the spine that is significantly stronger, more flexible and more durable than traditional hot melt. Pur glue is more durable and flexible than eva glue, and once the glue has set, it is almost impossible to tear a page out of a purbound book. Dural has been manufacturing adhesives and polymers for over 60 years. The main benefits of pur binding include 1 pur has superior flexibility, which prevents the spine from cracking when the book is opened wide or pressed down flat. Dura pro branded products are high performance adhesives, coatings and additives for industrial and distribution customers worldwide. The drying time for pur glue is more like pva glue, so you will have to keep the pages clamped together for a while as it setsup. Manufacturers commonly append prefixes and suffixes to their model numbers to indicate whether it is natural gas or lp. It is classified as a polymer because it has a molecular structure made up of similar units in a repeating chain.
With their high bond strength, polyurethane hot melts can be an attractive option for many different kinds of adhesive applications. If you do not find what you are looking for, contact us via 18882022468 or the contact form below to discuss your specific needs. Thats why its an ideal solution for demanding projects that see frequent use and demand durability. Pur glue will last for longer period than any other ordinary hot melt glue or cold emulsion glue. Conservators usually prefer this kind of glue as it does the least harm to valuable texts. In fact, since installing its pur binder over three years ago, pg now uses pur adhesion for about 40% of its books both hardcover and softcover. Our entire team is committed to making your products the best and we use the latest innovations in chemistry to custom develop environmentallyfriendly products to meet your specific industry needs.
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