ASTM D7234 PULL-OFF TEST ACOSPRAY DC3 & DC2

TEST REPORT

Applicant: ACOSPOARLMB AINXTE(PRANCAITFIOICNASL IBAV) LIMITED Number: HKGH0220958301 S1
SPINFNLEARTIJ1373A 12/F HEWLETT CTR
1T1H8E5N5KHZ2WEKS-T5UAH4NMEHRSTOLTOAIENNYLVGDUESEKENNLNRD Date: Nov 21, 2017

Attn: JACKIE SHE This is to supersede Report No.

Submitted sample said to be : HKGH0220958301 dated Nov 21, 2017

Item Name : Acospray DC Series Dry Spray System Samples
Item No. : DC 3 With 557 Adhesive

DC 2 With 343 Adhesive
Quantity : Total 24 pieces with area 15 cm x 15 cm
Vendor : Acosorb International BV
Country of Origin : Netherland
Applicant's claimed area to be used in : Semi-exposed Area
Applicant's claimed function : The product, Acospray DC series spray applied system is defined as a
wall and ceiling covering to absorb acoustical energy.
Applicant's claimed product description : Components and characteristics of the product are sound absorption
natural cellulose fiber with water base adhesive.
(Non-hazardous material according to EU criteria)
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For and on behalf of :
Intertek Testing Services HK Ltd.
Angel Y.F. Cheung
Vice President

*HJ02209583*
Page 1 of 4

TEST REPORT

Number : HKGH0220958301 S1

Sample Description:
1. Acospray DC3 in combination with 557 adhesive in 5mm and 15mm thickness on concrete surface
1.1. Combination of fiber material size 1-5mm
1.2. Water based multipurpose complex non water resistant polymer adhesiv
2. Acospray DC2 in combination with 343 adhesive 5mm and 15mm thickness on concrete surface
2.1. Combination of fiber material size 1-3mm
2.2. Water based multi purpose complex water resistant polymer adhesive

Test Standard : With reference to ASTM D7234

Results: Average

Average Separation Weight
Separation Force After
Thickness Force Adhesive Original Immersion Water
Of Coating Dimension Diameter Area Material Bonding Mass In Water Weight
Sample (mm) (mm) Condition (mm) (mm²) (N) (N) (g) (g) (g)
23°C, 50%,
5150 x 150 >72 hours 13 133 10 28.35
55°C, 95%,
5150 x 150 >168 hours 13 133-- 30
DC3 + 2°C, > 168
557 5150 x 150 hours
Adhesive Immersion in 13 133-- 26.7

5150 x 150 water -- -- 401.28 545.55 144.27
23°C, 50%,
15150 x 150 >72 hours 13 133 4.25 --
23°C, 50%,
5150 x 150 >72 hours 13 133 40 --
55°C, 95%,
5150 x 150 >168 hours 13 133 40.5 --
DC2 + 2°C, > 168
343 5150 x 150 hours
Adhesive Immersion in 13 133 40.2 --

5150 x 150 water -- -- 426.4 520.6 94.2
23°C, 50%,
15150 x 150 >72 hours 13 133 39.8 --

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*HJ02209583*

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TEST REPORT

Number : HKGH0220958301 S1

Average
Average Separation
Separation Force Per
Force Per Average Square
Average Square Separation Meter
Separation Meter Force Adhesive
Force Material Adhesive Bonding
Sample Condition Material (N) (KN/m²) Bonding (N) (KN/m²)
23°C, 50%,
>72 hours 10 75.2 28.35 213.1
55°C, 95%,
>168 hours -- 30 225.6
DC3 + 2°C, > 168
557
Adhesive hours -- 26.7 200.7
Immersion in
water -- --
23°C, 50%,
>72 hours 4.25 30.1--
23°C, 50%,
>72 hours 40 300.7--
55°C, 95%,
DC2 + >168 hours 40.5 304.5--
343 2°C, > 168
Adhesive hours 40.2 302.2--
Immersion in
water -- --
23°C, 50%, Test Setup
>72 hours 39.8 299.2--

Coating Weight Per Loading Per Square
Weight At 15 X 15 Weight Of Concrete Coating Weight At 15Square Meter Meter Due To
cm & 5 mm Coating Board X 15 cm (Kg/m²) Coating (N/m²)
Sample (g) (g) Thickness: 5 mm Thickness: 15 mm Thickness: 15 mm
DC3 +
557
Adhesive 401.28 370 31.28 4.2 40.9
DC2 +
343
Adhesive 426.4 370 56.4 7.5 73.7

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*HJ02209583*

Page 3 of 4

TEST REPORT

Number : HKGH0220958301 S1

Conclusion:
• The spray applied materials are very light in weight.
• The performance of coatings are very stable under the tested climate conditions.
• Both systems are very well suited for the semi-outdoor and indoor purpose. Bonding/holding strength of the DC3
system is 736 times its own weight; DC2 system is 4000 times of its own weight. Results imply it will unlikely to
be peeled off from itself.
• Used separation forces under several climate conditions are all in line. Meaning different climate conditions do
not effect bonding/holding strength.
• Bonding/holding strength is in line using DC2 with 343 adhesive at various thickness 5 or 15mm. Meaning
thickness does not effect bonding strength.
• Bonding to the concrete of DC2 with 343 adhesive is even stronger then the inner material strength.

DC3 - Base exposed DC2 - Only thin layer on coating had pulled off

Date sample received : Oct 24, 2017
Testing period : Oct 24, 2017 to Nov 14, 2017
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End of report

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*HJ02209583*

Page 4 of 4

To: PALMAX (PACIFIC ASIA) LIMITED Ref: FC-2017-12675
Attention: JACKIE SHE Date: Nov 23, 2017

Re : Report Revision Notification

Intertek Testing Services Report Number HKGH0220958301 to HKGH0220958304 Dated Nov 21, 2017
Please be informed that all the content recorded in the above captioned report will be void. This captioned report is
now superseded by a revised Intertek Testing Services report, HKGH0220958301 S1 to HKGH0220958304 S1.

Thank you for your attention.

For and on behalf of :
Intertek Testing Services HK Ltd.

Angel Y.F. Cheung
Vice President