Complete Analysis of Adhesive Paper Knowledge

Complete Analysis of Adhesive Paper Knowledge: Definition, Application, Selection, and Technical Points

1、 Definition and function of adhesive tape

Adhesive paper (also known as backing adhesive paper or adhesive positioning paper) is an auxiliary material used to precisely control the position and shape of adhesive application. It is usually made of release paper (silicone oil paper) or PET film, and coated with adhesive (such as hot melt adhesive, pressure-sensitive adhesive, etc.) on the surface. Its core function is to:

Accurate positioning: By pre cutting holes or patterns, ensure that the adhesive is only applied to the target area.

Anti overflow glue: To prevent glue from overflowing and contaminating other components, and to enhance the aesthetic appearance of the product.

Improve efficiency: Suitable for automated dispensing equipment, simplifying production processes.

2、 Common types of adhesive tape

Classified by substrate:

Release paper dot adhesive paper: Low cost, good flexibility, suitable for flat pasting.

PET film adhesive paper: high temperature resistant, stretch resistant, suitable for precision electronic components.

Classified by adhesive type:

Hot melt adhesive dot paper: requires heating activation, with strong adhesive strength.

Pressure sensitive adhesive dot paper: It can be peeled off and applied immediately, with easy operation.

UV adhesive dot paper: requires UV curing and is suitable for high-precision scenes.

3、 Core application areas

Electronic industry:

Mobile/tablet screen bonding, FPC (flexible circuit board) fixation.

Prevent pad contamination, such as PCB board glue masking.

Automobile manufacturing:

Adhesive bonding of interior parts and fixing of wiring harnesses.

Medical equipment:

Aseptic packaging of disposable consumables.

Packaging industry:

Accurate attachment of gift boxes and labels.

4、 Key parameters for selection

Adhesive performance:

Viscosity, curing time, temperature resistance (e.g. -40 ℃~150 ℃).

Substrate thickness:

Commonly used 0.05~0.2mm, ultra-thin type suitable for microdevices.

Release force:

Light release type (easy to tear) or heavy release type (anti accidental tear).

Chemical resistance:

Resistant to solvents, oils, etc., to prevent adhesive failure.

5、 Precautions for use

Storage conditions:

Avoid light and moisture, recommended temperature of 10-30 ℃, humidity ≤ 60%.

Process adaptation:

The dispensing pressure and speed need to match the fluidity of the adhesive.

Environmental requirements:

Complies with RoHS/REACH standards and avoids solvents containing benzene.

6、 Common Problems and Solutions

Problem 1: Adhesive residue

→ Select low residue release paper or adjust the peeling angle.

Problem 2: Uneven adhesive layer

→ Check the cutting accuracy of the adhesive paper or the thickness of the adhesive coating.

7、 Future Development Trends

Intelligence: Combined with AI dispensing equipment to achieve dynamic path adjustment.

Environmental protection: application of water-based adhesives and biodegradable substrates.

Conclusion: Although adhesive paper is a small component, it plays a crucial role in precision manufacturing. Reasonable selection and use can significantly improve the yield rate and reduce production costs.