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PU(Poly Urethane) Sponge

PU(Poly Urethane) Sponge

Product Overview

This is a hydrophilic sponge roll with micropores in an open cell structure, which has excellent absorbency and a large absorption capacity, so it can remove moisture from the substrate surface in a short period of time, which increases productivity in the drying process. It also has excellent durability, so the roll replacement cycle is long, which has the advantage of reducing production costs.

product characteristics

  • Excellent absorbency and breathability due to its porous structure

  • Suitable for secondary processing such as cutting, sawing, and laminating

  • Maintains resilience even after shape deformation

  • Absorbs dust, particles, etc. without damaging the product surface

product advantages

product advantages

  • The micropore structure (10-30µm) quickly absorbs and evaporates moisture, keeping the product surface always dry.
  • Excellent ability to evaporate moisture even under high temperature conditions, stably maintaining product quality after processing
  • Excellent dry retention performance compared to general sponges, making it suitable for high-precision parts and film processes.

cost savings

  • Excellent moisture absorption reduces drying temperature and increases process speed → improves productivity
  • Increases product yield by simultaneously removing water (dust, particles, etc.) and moisture
  • PU material\'s unique wear resistance means a longer lifespan compared to other materials, and a shorter replacement cycle → reduced maintenance costs.

Easy maintenance

  • Unlike regular sponges, it does not harden and remains flexible even when dry.
  • Maintains original absorbency and resilience even when moisture is not supplied
  • Easy to manage as there is little change in physical properties even after long-term storage and repeated use

Sponge properties

Pore Size (µm) 10–30 Heat Resistance (°C) 120
Porosity (%) 80 Tensile Strength (N/cm²) 120
Hardness (C Type) 350 Elongation (%) 250
Specific Gravity (g/cm³) 0.26 Hardness (C Type) 10

Compare products from other companies

Item Molton PVA PVC PU
Moisture Absorption X
Chemical Resistance X X
Heat Resistance X X
Abrasion Resistance X X
Dust & Mold Resistance X X

specific use

  • Prevents discoloration, contamination, and staining during bonding, gold plating, and other processes.
  • Prevents dust and foreign matter from adhering during the laminating process.
  • Removes moisture passing through the hole.
  • Increased production speed: 3 m/min → 6~8 m/min.
  • Increased drying temperature efficiency: 70~80℃ → 45~55℃.
  • PU Sponge Roll does not harden even in hot air dryers.
  • Effective for removing liquids such as cupric chloride.
  • Applicable to both rigid PC and FPCB.

Examples of application in other fields

OA, FA related fields

  • Sap cutting roll of car shaping machine, PPC related transfer shaping roll
  • For removing foreign substances, ink absorber for inkjet printers

Medical 분야

  • Surgical gauze, blood filter, orthopedic support
  • Liquid pain reliever application head

Sports-related fields

  • Grip tape (for rackets, bats, etc.), sports towel, Taekwondo head

Miscellaneous goods related

  • For cosmetics (powder puffs, eye shadow, etc.)
  • Glue Head, printing surface of connected printing ribbon

Chemical resistance

Solvents
Compatible Alcohols (MA, EA, IPA, etc.), Phenol, Formalin, Esters,
Machine Oil, Castor Oil, Gasoline
Slight Change (Swelling) Benzene, Toluene, Acetone, MEK, Xylene
Not Compatible Dimethyl Formamide, Dimethyl Sulfoxide

Solvent resistance

ST Type Protrusion Type Knurled Type
- For removal of floating contaminants
- Absorption / liquid wiping
- For removal of floating contaminants
- Absorption / liquid wiping
- For removal of adhered contaminants

Privacy policy

Through the privacy policy, the company informs you of the purpose and method of use of the personal information you provide, and what measures are being taken to protect your personal information.

▶ Purpose of collection and use of personal information

- Self-identification, real name verification, confirmation of subscription intent, use of age
- restricted services according to service use
- Contract performance regarding service provision and fee settlement, content provision, purchase and fee payment, product delivery or sending of invoices, etc.
- Delivery of notices, securing communication channels for complaint handling, securing accurate delivery information when delivering products
- Information for providing the latest information such as new services and providing personalized services
- Other smooth provision of high-quality services, etc.

▶ Items of personal information collected

- Name, company name, email, address, contact information, mobile phone number, inquiry content, and other optional items

▶ Retention and use period of personal information

- In principle, personal information is destroyed without delay upon achieving the purpose of collection or provision.
- However, in order to provide smooth service consultation, the contents may be retained for 3 months after the consultation is completed, and in cases where preservation is required by other laws such as the Act on Consumer Protection in Electronic Commerce, the information will be retained for a certain period of time.

▶ Personal information destruction procedures and methods

In principle, the company destroys the relevant information without delay after the purpose of collecting and using personal information has been achieved. The information you entered for membership registration, etc. is transferred to a separate DB (separate file in the case of paper) after the purpose has been achieved, and stored for a certain period of time according to internal policies and other relevant laws and regulations for information protection reasons (see retention and use period) and then destroyed. Personal information transferred to a separate DB will not be used for any other purpose than that for which it is retained, unless required by law. Personal information stored in electronic file format is deleted using a technical method that makes it impossible to reproduce the record.

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