We are going to give some advices for choosing the best hotmelt adhesive for manufacturing mattresses. We know the difficulty of choosing the most suitable industrial adhesive for the fabrication of every type of mattress, for this reason, today we are going to speak about our products for this issue.
- IF MATTRESS HAVE POCKET SPRING:
Normally, the metallic springs are packed with fabric forming raw of different length depending on the mattress size. You should try a flexible adhesive to join this raw of pocket spring, you should think that when you sit on or lie down in the mattress, these springs contract and obviously also the fabric that involve them and the adhesive which join the ensemble contract too.
Some mattress manufacturers use the same industrial adhesive for packaging and for joining the raw of pocket springs, especially because they are more economic and the glued is correct. But these adhesive used to be rigid and hard mostly in low temperatures (lower than 10ºC) and they could arrive to broke or crack when we make a pressure on them.
This problem doesn’t happen using the custom-fitted adhesives developed for Productos Colcar SL for this application:
- Goma Soli 710: The flagship product if you are looking for the maximum flexibility.
- Goma Soli 711: A good product with a very good flexibility.
- Goma Soli 712: The less flexible of the 3 product but it maintain a good flexibility and a very short open time.
All of them are formulated with components very elastics how a good mattress needs.
- CHOOSE ADHESIVES IN RUBBER BASE OR IN POLYOLEFIN BASE (APAO):
For gluing the different internal layers of a mattress, as well if it is of polyurethane foam, viscoelástica or felt or combined, we can use industrial adhesive based on synthetic rubber or based on polyolefin base (APAO: Amorphous Poly Alpha Olefin also Known as Amorphous Polyolefin or simply Polyolefin).
Before of all, we want to make very clear that you can glue the mattress with a good quality with both kind of adhesives, as many APAO as rubber base, but they have some differences that we are going to comment just now.
- ADVANTADGES AND DISADVANTAGES OF EACH TYPE OF ADHESIVE
Each industrial adhesive of the catalogue that offer Productos Colcar SL has advantages and disadvantages what you have to consider for choosing the most suitable adhesive:
- The initial adhesion to substrate of industrial adhesives in rubber base is practically immediate, while in the APAO base it takes a few seconds.
- The final cohesion of an APAO adhesive is higher than a rubber base adhesive (higher resistance to break the adhesive layer especially with a little extreme temperature).
- Noise of the adhesive: When the mattress manufacturer apply the hotmelt adhesive for gluing to internal layers of the mattress, it can happen that in some zone the two layers don’t fit in perfectly.
In the normal process of production, after applying the industrial hotmelt adhesive, they put a layer over the other layer and they make a pressure (manual or automatic press) for guarantying the glued of the layers.
If the two pieces don’t fit together correctly, the adhesive touch the two parts to joint but this zone come off (unglue) before the adhesive will be cold. When the adhesive cool being in contact both layers it makes a strong binding, but when the adhesive is still hot if there is a bad layer contact then it can unglue.
Therefore, we’ll have one part of the adhesive in the upper layer and other part in the below layer but this zone doesn’t be joined.
If the industrial adhesive chosen is of APAO you don’t have any problem, because these kind of adhesives when are melted have a great tack, but when they cool they lose this tack. Nevertheless the adhesive with rubber base are very sticky even when they are cold (they maintain the tack).
What does it happen when one of these mattresses is used by a customer? When we lie down in a mattress our weight apply a pressure in this zone which is without bind and it makes that it return to put in contact the part of adhesive that remain in the upper layer with the remaining part of the below layer.
If the adhesive used was with rubber base, just in the moment that the person move or change his position in the mattress, he will hear a crick-crick sound that emits the adhesive when the two parts touch and unglue each other.
If it was made with APAO and remain in room temperature, this adhesive don’t have superficial tack, so when the two parts of adhesive remaining in the two layers touch each other we don’t hear any noise.
During the daytime a person is incapable to note or hear this kind of noise, but in the silent of the night is easily detected and this will imply a complaint of the customer.
Don’t worry, you can use the 2 types of products (rubber or APAO) but you have to know which advantages or disadvantages they provide.
Productos Colcar SL have developed various industrial adhesives in rubber base with a superficial tack very low (almost non-existent) when the adhesive is a room temperature, like our Colcar H-500. If you prefer rubber base but you don’t want any noisy adhesive you can use this adhesive.
In APAO base we have products with quick glued that in only 3-4 minutes allow to roll the mattress and to make the vacuum to pack it in a very compressed space without affect any characteristics of the adhesive glued. We recommend for this type of vacuum package our adhesive Colcar H-510.
If you company need a higher or lower open time of the adhesive for adapting to the time that you need to glue one layer with the other during your manufacturing process, please, don’t doubt in contact with us, because we have a great variety of products with open time very short to open time very long.
You can visit our page about Adhesives for mattresses and sofas to know more details.