Why isn’t there a universal type adhesive?We need to know the theory of adhesive, that is, “there is no universal type adhesive, but only suitable adhesive”.
Why can’t adhesives be universal?
Classification of adhesives by component basis can be presented as inorganic adhesives (concrete, plaster, ceramic) and organic adhesives (natural copolymer, and synthetic copolymer)
Hot melt adhesive is a type of thermoplastic adhesives among synthetic polymers. Epoxy resin is a type of thermosetting adhesives among synthetic polymers. Silicone is classified as synthetic rubber adhesives.
Different adhesives have different components and formulas. Therefore, we need to understand all the conditions and requirements of adhesion before we choose adhesives in order to achieve the best bonding effects.
If you are looking for eco-friendly adhesivesIf you are looking for eco-friendly adhesives, hot melt adhesives will be a good option.
Hot melt adhesives are 100% solid content made up of non-toxic polymer materials. Therefore, no toxic waste will be generated during production or application.
Hot melt adhesives are widely applied. For instance, packaging purpose, straw attachment, medical aluminum foil bag sealing, diaper, sanitary napkin, electronic product sealing & protection, filtration media bonding, home appliance assembly, etc... Hot melt adhesives bring more convenience during transportation and storage, and perform more eco-friendly, compared to other adhesives.
Hot melt adhesives, eco-friendly, safe and fast setting grade, RoHS certified as green products, suitable for automated production, has become the fastest growing adhesives products.
「TEX YEAR ®」 is the prestigious brand registered in 2003 by Tex Year Company.
「TEX YEAR ®」is your prioritized selection of hot melt adhesives.
Our products are applied in the following industries: packaging, shoes, wood working, book binding, craftwork, tape, automotive, toy, stone material, HIFI stereo, screw fixing, PCB assembly, etc.. We are the designated supplier of many internationally prestigious big brands.
How to select adhesives?We have solutions and advise for adhesive selections on different substrates.
1. Regular papers, papers laminated with PE, OPP films, or UV varnished papers can go with hot melt adhesive, HMPSA or hot melt glue sticks. For instance, color box forming.
2. Household repair or sealing jobs in which glues bond papers, woods, concretes, go with hot melt glue sticks or super glues.
3. Difficult substrates like PE or PP materials can go with APAO based HMA or HMPSA. For instance, the box re-opening problem caused by sunlight exposure that happens to PP corrugated box assembly for agricultural products can be solved by APAO based adhesives.
4. Regular PVC edge banding can go with EVA based HMA.
5. Metal material bonding can go with two- part acrylic glues or EPOXY resins. Structure adhesion can be achieved with the applications of speaker magnet, galvanized iron, elevator steel sheet bonding.
6. If the strength requirement of general plastic material bonding is not high, then HMA is the way to go. If the strength requirement is high, then please go with two-part acrylic glues.
7. UV adhesives and EXPOXY resins can meet the requirements of production of optical lens assembly.
What is FDA certificate? Food safe hot melt adhesivesThe ingredients of the specific Tex Year hot melt adhesives comply with requirements of FDA-code CFR 175.105.
What is FDA certificate?
Food and Drug Administration (FDA or USFDA) is a federal agency of the United States Department of Health and Human Services, one of the United States federal executive departments. The FDA is responsible for protecting and promoting public health through the control and supervision of food safety, dietary supplements, prescription and over-the-counterpharmaceutical drugs (medications), biopharmaceuticals, medical devices, electromagnetic radiationemitting devices (ERED), and cosmetics.
This association is related to every US citizen’s daily life. Internationally, FDA is regarded as one of the biggest institution that manages foods and drugs. Many other countries seek for help from FDA in order to improve the product safety in their own countries.
FDA is responsible for dietary supplements, prescription and over-the-counterpharmaceutical drugs (medications), vaccines, cosmetics, animal foods & feed and veterinary products, beverages with 7% Alcohol content or above, biopharmaceuticals, medical devices, safety test on inonic and nonionic radiation, safety certificate issuing of electromagnetic radiationemitting devices (ERED). The above-mentioned products need to be FDA certified before be sold in markets. Hope this gives you a rough idea about what FDA certificate is.
Types of hot melt adhesivesClassified by component basis:
◎EVA based hot melt adhesives
◎TPR/ Rubber based hot melt adhesives with surface tack, also known as hot melt pressure sensitive adhesives.
◎APAO based /Polyolefin hot melt adhesives.
◎Polyamide hot melt adhesives
◎MPO hot melt adhesives, the best thermal stability grades.
These are all eco-friendly adhesives made for different kinds of applications.
Adhesive strength or temperature resistance demandsTex Year offers total solutions by introducing diversified adhesives product lines to different customers in different industries who have different requirement levels of strength, temperature resistance, or different demands of production conditions.
We recommend the products based on demands of strength and temperature resistance.
1. High temperature resistance: We recommend synthetic rubbers, two-part acrylic glues, or EXPOXY resins. Those adhesives are 100℃ tolerable。
2. UL grade glues, demand of UL94V0 inflammability certification: Our glue sticks certified by UL940V, have strong bonding on PCB and copper wire materials. We renew our certificate every year.
3. Our two-part acrylic adhesives can meet the requirement of high/low environment temperature resistance from our customers.
4. We offer inorganic adhesives to customers who have extremely high temperature resistance requirement, such as, 400℃ or above.
Tex Year, a professional adhesive manufacturer, solves your problems of bond.
What is UL certificate? UL grade hot melt adhesivesUL certificate is the test of inflammability of UL94V-0 plastic materials. UL is abbreviated from Underwriter Laboratories Inc.
Adhesives that works for general home appliances, are evaluated their inflammability by UL value.
UL certificate holders are required to accept the follow up check periodically. If they fail in the follow up periodical check, the yellow card certificate will be canceled and certificate holders will be prohibited from using UL logo anymore.
UL certificate has four levels. They are 94V-0、94V-1、94V-2, and HB grade by descending order of inflammability.
Product types of hot melt adhesive productsHot melt adhesives, 100% solid content & solvent free grades, are most eco-friendly adhesives.
Hot melt adhesive have different kinds of shapes. We have glue sticks with different diameters, glue granules, glue chiclets, glue pillows, and glue blocks. Diversified shapes can be customized based on customer’s glue dispenser selections.
Tex Year offer complete hot melt adhesives production lines, including general type, shoes application, hot melt pressure sensitive adhesives, UL grade hot melt adhesives for electronic products, and new developed synthetic resin hot melt adhesives (UL grade glue sticks) in compliance with UL regulation in USA.
Proper storage for adhesivesStorage instructions of adhesives are stated in manuals.
Please pay attention to production lot number when it comes to bulk consumption of adhesives. “First in first out” is the rule of thumb to deal with inventories.
Solvent based adhesives need to be placed in ventilated placed with a fire extinguisher.
How to use hot melt adhesivesWe need to heat up glue until it get melted before we apply glue on substrates.
The common heating up method are presented as below:
1. Heating tank
Heating activator is placed inside tanks. Glues are indirectly heated until melted, then drop down from a metal net to air pump in feeder system. This approach is the most common one and workable for all kinds of shapes of HMA.
We also have other heating approaches, such as direct electric heating, indirect circulating oil heating, hot air & ultra-red heating. Every approach has its pros & cons.
2. Continuous melting
Feeders are extruded by screw in extruders. Normally go with granule adhesive. Besides, we find some glue sticks are melted through gear system, this is mostly for toes puff application.