TESTING OF 266 VS 2279 ON 1/7/2015

The working temp for 266 EVA is 350F to 400F.

The working temp for 2279 APAO is 300F to 375F.

266 EVA 350F Cross link to Cross link: 2279 APAO 330F Cross link to Cross

link:

Two layers of LD45 cross link PE foam were bonded

together at a shop room temperature of 65 deg. F,

they were manually pressed together and then put

in the pneumatic press for 10 seconds. The sample

was then set aside to cool at room temperature

until cool to the touch. The foam bond was then

evaluated and found to be well bonded with no

gap. When pulled apart, the foam tore and the

glue held its bond.

Two layers of LD45 cross link PE foam were bonded

together at a shop room temperature of 65 deg. F,

they were manually pressed together and then put

in the pneumatic press for 10 seconds. The sample

was then set aside to cool at room temperature

until cool to the touch. The foam bond was then

evaluated and found to be well bonded with no

gap. When pulled apart, the foam tore and the

glue held its bond.

266 EVA 350F Cross link to Cross link:

A second sample of LD45 was bonded together at

room temperature, manually pressed together and

then put in the pneumatic press for 10 seconds.

The sample was then placed in the warehouse, at a

temperature of 1 F. After 10 minutes the sample

was evaluated and the 2 layers of foam were well

bonded with no gap. When pulled apart, the foam

tore and the glue held its bond.

266 EVA 350F 2.2# PE to Smooth

HDPE:

One layer of 2.2# PE was bonded to one layer of

HDPE at a shop room temperature of 65 deg. F,

they were manually pressed together and then put

in the pneumatic press for 10 seconds. The sample

was then set aside to cool at room temperature

until cool to the touch. The foam bond was then

evaluated and found to be well bonded with no

gap. When pulled apart, the foam tore and the

glue held its bond.

2279 APAO 330F Cross link to Cross

link:

A second sample of LD45 was bonded together at

room temperature, manually pressed together and

then put in the pneumatic press for 10 seconds.

The sample was then placed in the warehouse, at a

temperature of 1 F. After 10 minutes the sample

was evaluated and the 2 layers of foam were well

bonded with no gap. When pulled apart, the foam

tore and the glue held its bond.

2279 APAO 330F PE 2.2# Smooth

HDPE:

One layer of 2.2# PE was bonded to one layer of

HDPE at a shop room temperature of 65 deg. F,

they were manually pressed together and then put

in the pneumatic press for 10 seconds. The sample

was then set aside to cool at room temperature

until cool to the touch. The foam bond was then

evaluated and found to be well bonded with no

gap. When pulled apart, the foam tore and the

glue held its bond.

266 EVA 350F 2.2# PE to Smooth

HDPE:

A second sample of 2.2# PE and HDPE was bonded

together at room temperature, manually pressed

together and then put in the pneumatic press for

10 seconds. The sample was then placed in the

warehouse, at a temperature of 1 F. After 10

minutes the sample was evaluated and the 2 layers

of foam were well bonded with no gap. When

pulled apart, 75% of the glue held its bond and

about 25% of the glue gave way.

2279 APAO 330F PE 2.2# Smooth

HDPE:

A second sample of 2.2# PE and HDPE was bonded

together at room temperature, manually pressed

together and then put in the pneumatic press for

10 seconds. The sample was then placed in the

warehouse, at a temperature of 1 F. After 10

minutes the sample was evaluated and the 2 layers

of foam were well bonded with no gap. When

pulled apart, the foam tore and the glue held its

bond.

266 EVA 350F 2.2# PE to 2.2# PE:

Two layers of 2.2# PE was bonded together at room

temperature, manually pressed together and then put

in the pneumatic press for 10 seconds. The sample

was then set aside to cool at room temperature

until cool to the touch. The foam bond was then

evaluated and found to be the 2 layers of foam

bonded together ok was no gap. When pulled apart the

foam ripped apart and the glue melted into the foam

more than it should have.

2279 APAO 330F PE 2.2# to PE 2.2#:

Two layers of 2.2# PE was bonded together at room

temperature, manually pressed together and then put

in the pneumatic press for 10 seconds. The sample

was then set aside to cool at room temperature

until cool to the touch. The foam bond was then

evaluated and found to be the 2 layers of foam

bonded together ok and there was no gap. When

pulled apart the foam ripped and the glue held its

bond. The glue melted into the foam just the right

amount.

266 EVA 350F 2.2# PE to 2.2# PE:

A second sample of 2.2# PE was bonded together

at room temperature, manually pressed together

and then put in the pneumatic press for 10

seconds. The sample was then placed in the

warehouse, at a temperature of 1 F. After 10

minutes the sample was evaluated and the 2 layers

of foam were bonded together ok with no gap.

When pulled apart the foam ripped apart and the glue

melted into the foam more than it should have.

2279 APAO 330F PE 2.2# to PE 2.2#:

A second sample of 2.2# PE was bonded together

at room temperature, manually pressed together

and then put in the pneumatic press for 10

seconds. The sample was then placed in the

warehouse, at a temperature of 1 F. After 10

minutes the sample was evaluated and the 2 layers

of foam were bonded together ok with no gap.

When pulled apart the foam ripped apart and the

glue held its bond. The glue melted into the foam

just the right amount.

266 EVA 350F 2.2# PE:

Placed the glue on top of the foam and set it aside

until the glue dried the glue melted into the foam

more than it should have.

2279 APAO 330F PE 2.2#:

Placed the glue on top of the foam and set it aside

until the glue dried the glue melted into the foam

just the right amount.

Conclusion:

The testing shows little to no difference between the adhesives for PE to HDPE and cross link to cross link.

However the 2279 APAO worked slightly better than the 266 EVA in the testing of PE to PE.

One notable difference between the two hot melt adhesives lies in the recommended operating temperatures.

The recommended starting temp for the 266 EVA is 350F which can cause undesired melting of PE foams.

The recommend starting temp for the 2279 APAO is 300F, which appears to be low enough to avoid PE

melting and allows for a better bond?

Unfortunately, the 2279 APAO costs 40% more than the EVA. Power Adhesives also requires that we pay

freight on the 2279 APAO, while the Jowat 266 EVA has delivered pricing. We have to pay freight on to

The Power Adhesives 2279 APAO does have some clear advantages over the Jowat 266, however, given that

the Jowat 266 is meeting our current needs, it is our judgment that the advantages of the 2279 APAO do not

reach a level needed to justify both the additional cost and complication of maintaining another hot melt system

with a different adhesive. We should, however, seek to maintain contact with Power Adhesives, should we

come across a more demanding hot melt application in the future, or should the formulation or availability of

the Jowat 266 change.