Oil Filter Bonded Hot Melt Adhesive

The application of Hot Melt Adhesive in automobile filter

Some data predict that by 2020, China's automotive filter market demand will increase to 1.16 billion sets, with a market value of more than 100 billion yuan. With the development of the automobile market, there are more and more types of models, among which the filter is more and more diverse, there are round barrels, plate types, irregular types, etc., large trucks usually use round barrels, and cars, SUVs are usually plate types.

The bonding of automobile filter is mainly in filter paper folding, tooth ridge glue line (fixed tooth type glue), end cap bonding, filter paper joint, sealing ring bonding, border bonding and so on.
With the requirements of lightweight, noise and shock reduction, low emission, low VOC and low odor in China's automobile industry, the adhesive used in automobile filters has also had some new characteristics and development direction. Hot Melt adhesive, because it has the characteristics of environmental protection, non-toxic, fast curing, low odor, low VOC, and wide bonding surface, it is the development direction of adhesives used in the filter industry.

Filter element origami bonding
The glue machine supply is stable, the melting is full, the glue is kept at a specific temperature, the viscosity is stable, the fluidity is uniform, and the glue line is uniform without bubbles.
Glue machine: rubber box temperature 150 degrees, hose temperature 140 degrees, nozzle temperature 130 degrees; After the glue is coated, put the material into the drying box, place it at 90 degrees for 24 hours, and see the change of the adhesive paper, which can not be displaced and deformed.

Back glue thread
The filter of small cars, SUVs and other cars, in order to strengthen the tooth filter element, the filter element is longitudinally lined with several rubber lines to connect the tooth filter paper to form a solid whole. Commonly used PA hot melt adhesive requires the adhesive to have a certain hardness, so that the filter is firm, but also to have a certain flexibility, even at lower temperatures, the glue line can not be brittle and broken. Different host manufacturers have different requirements for high and low temperature resistance.

Bonding joint
The seam bonding at the end of the filter paper, the bonding between the filter paper and the filter paper, usually use resin EVA hot melt adhesive, PO hot melt adhesive, PA hot melt adhesive, the filter paper joints of the air filter are commonly used EVA or PO hot melt adhesive, and the filter core joints in the oil filter are now multi-used PA polyurethane hot melt adhesive, and the metal clamp connection sealing is also common.

PA adhesive has very good resistance to high temperature and medium. The hot melt adhesive form is mostly stick, melt the glue with the Hot Melt Glue gun, and manually coat the joint on the interface filter paper.

Bonding of end caps
The adhesion between the metal end cover or plastic end cover and the filter element is usually made of two-component PU glue, and there are many hot melt adhesives. This kind of hot melt adhesive requires good fluidity, bonding strength to meet the requirements, and certain high temperature resistance and low temperature performance. PA hot melt adhesive for fuel/oil filter, high temperature resistance reaches 180 ~ 190 degrees.

The air conditioner filter frame is glued
Air conditioning filter border seal bonding, edge sealing strip through the roller, Hot Melt Glue Machine gun head evenly scraping glue, after the manual edge sealing strip pasted to the filter element around to complete the bonding seal.

The edge sealing adhesive of air conditioner filter is mostly EVA hot melt adhesive, which requires good fluidity, high bonding strength and excellent low temperature resistance. Some manufacturers also use a manual hot melt Glue Gun to melt the hot melt Glue Stick, apply the glue to the edge sealing strip, and then attach it to the filter element.

Hot Melt Adhesive For Filter