Decorative Panels

Phenolic Kraft Paper One-step Impregnation Line

A one-step impregnation line for producing phenolic kraft paper with the penetration, bonding strength, and heat resistance required for HPL cores.

Phenolic Kraft Paper One-step Impregnation Line

Core process capabilities

ImpregnationDryingThermal CuringCuttingStackingWeb Tension ControlPLC/HMI Control

Production applications

HPL Production Line

Equipment and process details

Final parameters and system boundaries are confirmed against materials, process targets, capacity and site conditions.

The phenolic kraft paper one-step impregnation line is mainly used for producing phenolic kraft paper, a key material for the HPL.

In HPL, phenolic impregnated kraft paper serves as the core layer, requiring excellent resin penetration, strong interlayer bonding, and high heat resistance.

With a mature structure and stable operation, the line is suitable for kraft paper of different basis weights and various phenolic resin systems. It balances continuous production efficiency with product consistency, making it an ideal solution for producing HPL core paper.


Application

HPL core layer paper production line

Process Type

One-Step Impregnation Line

Base Paper

Kraft Paper

Resin System

Phenolic resin (PF)

Customization

Line configuration, including oven zone number and unit requirements, can be recommended or customized based on base paper basis weight and dimensions, production capacity targets, and finished paper requirements.

Nantong Tongbo Machinery specializes in the manufacturing of one-step phenolic kraft paper impregnation lines for producing phenolic impregnated kraft paper used as the core material of High Pressure Laminate (HPL).

In HPL production, phenolic impregnated kraft paper provides the structural strength and dimensional stability of the finished laminate.


Process Configuration

Equipment

Function

Arm-Radial Rewinder

Winds the web using a rotating arm while maintaining stable tension and enabling quick roll changes for continuous production.

Impregnation Gluer

Applies and meters resin uniformly onto the base paper, ensuring full fiber penetration and controlled resin pickup before drying.

Drying Ovens

Remove moisture and solvents so the resin reaches the required B-stage for stable downstream processing.

Cooler

Reduces the temperature of the impregnated material after drying, stabilizing the sheet and preventing sticking before cutting, stacking, or further processing.

Web Guide

Corrects lateral web misalignment so the material remains centered and stable without uneven tension.

Traction Unit

Provides controlled pulling force so the material moves through each process section at a stable speed and tension.

Paper Cutter

Cuts the continuous impregnated web into sheets of the required length for downstream stacking or pressing.

Conveyor

Transfers cut sheets smoothly to the stacker or the next process without deformation or misalignment.

Paper Stacker

Automatically collects and aligns cut sheets into neat stacks for handling and downstream processing.

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