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BUSINESS

Business

Description: Developed PU foam type with high tensile strength to secure impact resistance and toughness for TV bezel

Development direction

Category	Generation 1	Generation 2
Concept	Double-sided adhesive	Skin Laminate
Description
Technology	PU Foam + PSA	PU Foam + Skin + PSA
Advantages	High adhesion	High adhesion/retention Excellent reworkability/Reworkable Excellent processability
Disadvantages	Not reworkable Non-Rework	High unit cost Process complexity
Other	Development completed	1. TPU with skin properties, PU application review 2. Giving the adhesive a skin function 3. PE Skin

Specialized Technology

01. PSA (Pressure Sensitive Adhesive) characteristics

a. High crosslinking density
b. Low initial adhesion (Tack) → Reduced compatibility with substrate, high cohesiveness
c. High cohesion → Excellent heat and chemical resistance of adhesives
d. Can be attached to high squeezing force

02. Technical characteristics

a. Product design technology considering the physical properties of PU foam (CFD, Foam Density)
b. PU Foam and combination based on high-reliability new PSA Recipe development technology
c. Process conditions (coating, lamination, etc.) optimization technology

03. Maximize performance

a. Maximization of adhesion characteristics: Normal temperature test, low temperature test, high temperature test, storage test, aging test
b. Maximize retention characteristics: Normal temperature test, low temperature test, high temperature test, high temperature and humidity test
c. T-Block characteristics maximized: Adhesion Retention T-Block Test, T-Block Limit Test
d. Understanding and utilizing PU Foam specifications (foam density, CFD, Skin/Foam thickness)

Properties	Hard Type PSA	Reliability Assessment	Soft Type PSA
Adhesion	OK	Room temperature	OK
	OK	Low temperature	N.G or △ or adhesive transition occurs
	OK	High temperature	N.G or △ or adhesive transition occurs
	OK	High temperature and humidity*24hr	OK
	OK	High temperature and humidity*48hr	N.G or △ or adhesive transition occurs
T-Block	OK	Apply 500g pendulum	OK
T-Block	OK	Apply 1.5kg weight	N.G or △ or adhesive transition occurs

Description

Acrylic foam tape for mounting vehicle interior and exterior parts
Excellent impact resistance, tensile strength, durability, and chemical resistance in various conditions provide excellent adhesion
Able to absorb physical stress from the external environment

Manufacture process

Specification

Item	Unit	SHA (G) 64	SHA (G) 80	Test Method
Total Thickness	㎛	640㎛ ± 10%	800㎛ ± 10%	Digital Upright Gauge
Color		Gray
Liner description		White paper or Red PE liner
Density	Kg/㎥	0.78	0.77
SUS Peel Strength	N/25㎜	38 over	43 over	180˚ Peel, ASTM D3330
Holding Power	10,000min	Pass		ASTM D3654
Dynamic Shear Strength	N/25㎟	630 over	600 over	ASTM D3654

SUS Peel Strength Properties : N/25mm, 300mm/min, 25microns PET film backing, after 72hr
Holding Power Properties : 130℃ /1,000g/10,000min/ 25mm*25mm, after 5min
Dynamic Shear Strength Properties : 25 mm*25 mm size, load cell:5KN
Peel speed :10 mm/min, Peel angle: 180 degrees after 72hr