Heung Il Polychem Co., Ltd.
5 1

Process Synthetic Leather and PU Coated Spilt Leather

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Heung Il Polychem Co., Ltd.
[Korea]

Address
1724-1, Songjeong-dong Gangseo-gu Busan
Phone
82-51-8318871
Contact name
Jin-man, Ha

Description

Descriptions

Polyurethane resins for Dry-process synthetic leather and PU coated split (action) leather: It is used in manufacturing various synthetic leather through transfer-coating process using release paper on fabric materials of woven & non-woven. It can be applied to garment, shoes, bag, furniture, etc. By selecting process method (Wet, Dry, Semi Dry lamination) according to its kinds of fibers & usages. It is separated into one component skin resin & two component binder resin. And it has flexibility at low temperature, anti-hydrolysis, moisture permeability and softness. It is used in manufacturing PU coated split leather, which is similar to grain leather through transfer coating process using release paper on split leather. It is called as PU resin for action leather. It is divided several grades of PU resins like Nubuck, Pull-up, flexible(especially at low temp.), and foaming type, which can satisfy various needs of users. We already finished developing specialized goods such as pile flocking on split leather and Wet-processed film imitation, which has highly added value.

1-1. component PU for Dry Process

Developed for the application of Dry-processed synthetic leather, 1-component PU is a.thermoplastic Polyurethane resin solution. Once solvent is volatilized, 1-component PU forms film that has highly durable elasticity and strength, which results in chemical and abrasion resistance, low temperature flexibility, and resistance to solvents and chemicals

Item Solid
(%)
Viscosity
(PSf/㎠)
Physical properties of film Characteristics Application
100% Modulus
(kgf/㎠)
Tensile strength
(kgf/㎠)
Elongation
%

HD-6070

29~31 600~900 60~70 550~650 450~550 Low temp flexibility,
Good light stability
Shoes
HD-6070LC 29~31 600~900 45~55

350~350

500~600 Enamel type, Flexibility Shoes
HD-6370 29~31 600~900 55~65 480~550 450~550 Low temp flexibility,
Good light stability
Shoes
HD-8470A 29~31 400~550

50~65

350~500 500~600 Hydrolysis resistance,
High elasticity,
Waterproof
Shoes
HD-710G 29~31 600~900 65~75 500~600 300~400 General type Bag, Upholstery
HD-7370B 29~31 700~900 55~65 350~450 500~600 High elasticity,
Low temp flexbility
Shoes
HD-7380 29~31 600~900 60~70 300~400 350~450 General type,Flexibility,
Good light stability
Shoes,Bag
HD-7340 29~31 600~900 30~40 250~350 500~600

High speed drying,
Hydrolysis resistance

Garment
HD-706 29~31 700~900 55~65 450~550 400~500 Hydrolysis resistance,
Molding type
Shoes
HD-600A 29~31 600~900 65~75 550~650 400~500 Hydrolysis resistance,
Flexbility,Enamel type,
Heat rexixtance
Car seat,
Furmiture,Bag
HD-280A 29~31 600~900 70~80 500~600 350~450 Heat rexixtance,Enamel
Molding type
Shoes,Furmiture,
Bag
HD-7100 29~31 600~900 95~105 700~800 300~450 Hard type,
Abrasion resistance,
Good solvent resistance
Bag
HD-730 29~31 600~900 25~35 300~400 600~700 Soft touch,
Non-tacky type
Garment
HD-300NY 29~31 600~900 65~75 550~650 450~550 Hydrolysis resistance,
Flexbility,Non yellowing
Shoes
HD-320NY 29~31 600~900 15~25 300`400 550~650 Hydrolysis resistance,
Flexbility,Non yellowing
Shoes,Garment
HD-360NY 29~31 600~900 55~65 600~700 500~600 Hydrolysis resistance,
Flexbility,Non yellowing
Shoes
HD-370NY 29~31 600~900 65~75 550~650 450~550 Hydrolysis resistance,
Flexbility,Non yellowing
Shoes,Bag
HD-3250NY 29~31 600~900 220~270 900~1100 200~300 Hydrolysis resistance,
Flexbility,Non yellowing
Shoes,Bag

1-1. component PU adhesive layer

1-component PU adhesive is a thermoplastic Polyurethane solution. Once solvent is volatilized, it.shows strong adhesion, heat resistance, elasticity, and low temperature flexibility.

Item Solid
(%)
Viscosity
(PSf/㎠)
Physical properties of film Characteristics Application
100% Modulus
(kgf/㎠)
Tensile strength
(kgf/㎠)
Elongation
%

HB-2003

44~46 600~900 20~30 200~300 600~700 PVC/Nylon,
PVC/PE Foam
Garment,upholstery
HB-2005 49~51 450~650 10~20 250~350 650~750 Quick-setting type Garment,upholstery
HB-2006 49~51 450~650 20~30 260~370 450~550 Quick-setting type Garment,shoes
HB-550DC 49~51 500~800 20~40 230~330 500~650 Good solvent resistance Garment,upholstery
HB-2050 49~51 500~800 40~50 350~450 600~800 High elasticity,
Quick-setting type
Garment,shoes
HD-7340F 59`61 200~400 10~20 250~350 650~750 Semi-foam type,
Hydrolysis resistance
Garment
HD-2290F 39~41 180~250 50~60 400~500 400~500 Semi-foam type,
Buffing type
Shoes,bag,upholstery
HD-5250F 53~55 150~250 10~30 200~300 600~800 Semi-foam type,
Waxy type
Shoes,bag,upholstery

1-2. Component PU adhesive layer

2-component PU adhesive is an OH terminated Polyurethane solution and when mixed with the proper amount of cross-linking agents and accelerators, it forms a cross-linked film. This newly created film has good adhesion, elasticity, chemical resistance, and resistance to outdoor weathering. The adequate level of hardness may be obtained by controlling the adding amount of cross-linking agents. In order to meet the many prevailing requirements, various specifications are available.

Item Solid
(%)
Viscosity
(PSf/㎠)
Physical properties of film Characteristics Application
100% Modulus
(kgf/㎠)
Tensile strength
(kgf/㎠)
Elongation
%

HB-2008

59~61 600~900 8~20 200~300 450~600 Good adhesion with Nylon & PVC.
Dry lamination type
Garment,Thin PU
HB-283F 59~61 800~1200 15~25 200~300 550~650 PVC/pu Semi lamination
Flocking
Shoes,Bag
HB-118DC 44~46 1000~1600 15~25 350~450 700~85 Soft touch Garment
HB-790NC 69~71 600~900 15~25 250~350 350~500 Hydrolysis resistance,
Good light & NOX stability
Garment,Furniture
HB-2030C 69~71 600~900 25~35 350~450 700~800 Adhesion, Elasticity
Hydrolysis resistance
Shoes,Bag
Upholstery
HB-2020 69~71 600~900 20~30 250~350 500~600 Adhesion,High elasticity,
Thin PU.
Hydrolysis resistance
Shoes,Bag
Upholstery
HB-2020P 69~71 600~900 20~30 350~450 350~450 Hydrolysis resistance Shoes,Bag
Upholstery
HB-2080 79~81 200~400 10~20 250~350 650~750 High solid foam type,
thin PU.
Garment
HB-2925 69~71 100~400 30~40 350~450 550~650 Semi-foam type Shoes,Bag
Upholstery
HB-2070 69~71 600~900 20~25 350~450 350~450 Semi-foam type,
Good hydrolysis resistance
Shoes,Bag
HB-2009 69~71 450~650 30~40 350~450 550~650 Semi-foam type Shoes,Bag
Upholstery


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