Hot melt adhesives are solvent-free chemical compounds that are used to join materials.   They can be repeatedly softened by heat and hardened or set by cooling, allowing parts to be removed or repositioned during assembly.   Most hot melt adhesives solidify at temperatures below 180° F and become low viscosity fluids at temperatures above 180° F.   They form strong bonds, set rapidly upon cooling, and are relatively easy to handle. In general, hot melt adhesives...
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Q & A on Hot Melt Adhesives

We asked our users for their input on Hot Melt Adhesives. Here are the results of 54 users familiar with Hot Melt Adhesives.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing hot melt adhesive design?
8 answers
Answers:
Improvements in PLC technology have allowed for better control on film properties, while new resin systems are increasing the performance characteristics of our films, including peel strength and high/low temperature properties.
~Matt J, Sales Engineer, Santa Ana, CA
No new technology has been introduced for awhile; however, hot melt raw material shortages/changes are a big issue today.
~Steve K, Technical Support, St Paul, MN
Furniture assembling multi-gluing combination fast packaging
~Engineering, Consulting, Sassuolo, Italy
Co-polymers used for manufacture of hot melt adhesive systems.
~Rajesh B, Application Development Engineer, Mumbai, India
Melting temperature; bounding strength
~Jen-Luan C, Research & Development, Hsinchun, Taiwan
Nano technologies
~Manufacturing, Cincinnati, OH
Solvent acrylic.
~Erkam O, Project Manager, Istanbul, TURKEY
Polymers
~Engineering, Consulting, Zug, Switzerland

Q:
From your perspective, which companies are creating the most innovative hot melt adhesives?
10 answers
Answers:
Henkel National Bostik Durante Vivan ( italian )
~Engineering, Consulting, Sassuolo, Italy
Axiom Materials, Inc.
~Matt J, Sales Engineer, Santa Ana, CA
Henkel, H. B. Fuller, IFS Industries, Bostik Findley, Reynolds
~Steve K, Technical Support, St Paul, MN
Henkel; Arizona; various Chinese manufacturers.
~Manufacturer, Thomasville, NC
Bostik and Henkel
~Engineering, Consulting, Zug, Switzerland
Essebi, Italy
~A.T.M.Mazharul H, Purchaser, Gazipur, Bangladesh
Henkle, 3 M
~Rajesh B, Application Development Engineer, Mumbai, India
Dyna-Tech
~Manufacturing, Cincinnati, OH
Henkel
~Erkam O, Project Manager, Istanbul, TURKEY
JOWATH
~Research & Development, Sežana, Slovenia

Applications and UseTop

Q:
What are some of the applications you have used hot melt adhesives for?
15 answers
Answers:
Packing, sealing carton boxes with Hot melt ( EVA ) doors assembling, gluing up to 9 pieces doors ( wardrobe doors, kitchen doors..) with hot melt ( EVA + PVA )
~Engineering, Consulting, Sassuolo, Italy
1. Gypsum boards sticking on cement surface 2. Gypsum and Cement boards sticking on EPS blocks
~Manufacturing, Sharjah, United Arab Emirates
Adhering solid surface guide blocks, using it as a temporary hold to then fasten perm. with screws
~Ronald B, Cabinet maker, Dayton, OH
Our customers use Axiom Materials hot melt adhesives for bonding metallic and composite substrates, flame retardant applications, and honeycomb cores and paneling.
~Matt J, Sales Engineer, Santa Ana, CA
To bond activated carbon blocks to polypropylene plastics.
~Rajesh B, Application Development Engineer, Mumbai, India
Packaging, bookbinding, assembly, nonwovens, etc.
~Steve K, Technical Support, St Paul, MN
Producing hotmelt PSA self adhesive velcro tapes.
~Erkam O, Project Manager, Istanbul, TURKEY
1. Shoe lasting 2. Leather edge folding
~A.T.M.Mazharul H, Purchaser, Gazipur, Bangladesh
Spraying to glue in FIBC production.
~Radek Zmija, Purchasing, Bolatice, Czech Republic
HMA and PSHMA formulator, producer.
~Research & Development, Sežana, Slovenia
Construction and foot packaging.
~Engineering, Consulting, Zug, Switzerland
Pavement marking materials.
~Manufacturer, Thomasville, NC
Pressure sensitive labels.
~Manufacturing, Cincinnati, OH
Sculpture Millinery
~Technical Support/Services, Cambridge, Great Britain
Metal wire bounding.
~Jen-Luan C, Research & Development, Hsinchun, Taiwan

Q:
Please share with us any “non-standard” applications that hot melt adhesives have been used for.
4 answers
Answers:
Wood-glass assembly aluminium profile - glass assembly
~Engineering, Consulting, Sassuolo, Italy
To bind activated carbon to polyolefins..
~Rajesh B, Application Development Engineer, Mumbai, India
Ex.bounding 2 metal wire together
~Jen-Luan C, Research & Development, Hsinchun, Taiwan
Hard to say what is "non-standard," as hot melts have been used in such a wide variety of applications.
~Steve K, Technical Support, St Paul, MN

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of hot melt adhesives?
2 answers
Answers:
Only when the glue bond failed during a solid surface glue up and the parts moved out of alignment, causing extra work.
~Ronald B, Cabinet maker, Dayton, OH
Application temperature
~Erkam O, Project Manager, Istanbul, TURKEY

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
9 answers
Answers:
We use polyester rod for shoe lasting operation. After 6 months this polyester rod become brittle, making it unusable. It should have had a storage life of 2 years at least.
~A.T.M.Mazharul H, Purchaser, Gazipur, Bangladesh
In working with wood there isn't any any wicking into the wood as do wood glues so other than a surface adhering there isn't a good bond.. If there could be a bi- system so that as the glue was dispersed one agent would be absorbed by the wood and the other could be a catalyst adhesive to give a great bond.
~Ronald B, Cabinet maker, Dayton, OH
Custom cure temperatures to match my current cure cycles, availability in a range of thickness and weights with desirable properties for my particular application.
~Matt J, Sales Engineer, Santa Ana, CA
Open times, as long as possible... setting time, very fast melting point, as high as possible..
~Engineering, Consulting, Sassuolo, Italy
Low melting temp.; high flowability; good bounding capability.
~Jen-Luan C, Research & Development, Hsinchun, Taiwan
Combination of long open time with fast set speed.
~Steve K, Technical Support, St Paul, MN
Hot melt adhesives functioning as sealant, too.
~Rajesh B, Application Development Engineer, Mumbai, India
Narrow viscosity range; color stability;
~Manufacturer, Thomasville, NC
Low flow at elevated temperatures.
~Manufacturing, Cincinnati, OH

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of hot melt adhesives?
2 answers
Answers:
Users can apply two layers of a thinner film in order to increase bond thickness, ie. two layers of areal weight 0.030psf film to approximate a 0.060psf film weight product.
~Matt J, Sales Engineer, Santa Ana, CA
Discuss needs early on when designing new products if you intend to use a hot melt (or any adhesive for that matter). Don't wait until the part has been designed to start looking for an appropriate adhesive.
~Steve K, Technical Support, St Paul, MN

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using hot melt adhesives?
4 answers
Answers:
Surface finishing films can reduce pitting and eliminate some of the fill, fair and repair of composite parts. The thin surface film is typically the first layer on the tool surface, which co-cures with the following prepreg plys.
~Matt J, Sales Engineer, Santa Ana, CA
Find stable manufacturing capacity and short lead times.
~Manufacturer, Thomasville, NC
Clearly understand end use needs.
~Steve K, Technical Support, St Paul, MN
To test it well before buying it.
~Radek Zmija, Purchasing, Bolatice, Czech Republic


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