Decorative Panels
Shutter Plywood Two-Step Phenolic Impregnation Line
Nantong Tongbo Machinery specializes in the manufacturing of two-step phenolic impregnation lines for shutter plywood (film-faced plywood) used in concrete formwork applications. In shutter plywood production, phenolic overlay refers to phenolic impregnated and coated kraft paper rather than plastic film, typically…
Core process capabilities
Production applications
Equipment and process details
Final parameters and system boundaries are confirmed against materials, process targets, capacity and site conditions.
Two-step phenolic impregnation line for shutter plywood production, used to produce phenolic impregnated and coated low-basis-weight kraft paper for concrete formwork panels.
Application
Phenolic film / phenolic kraft paper for shutter plywood / film-faced plywood production
Process Type
Two-step phenolic resin impregnation and drying process
Base Paper
Low-basis-weight 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 two-step phenolic impregnation lines for shutter plywood (film-faced plywood) used in concrete formwork applications.
In shutter plywood production, phenolic overlay refers to phenolic impregnated and coated kraft paper rather than plastic film, typically using lightweight, low-basis-weight kraft paper to achieve flexibility and surface conformity.
Due to the thin structure of the kraft paper, a single impregnation process would result in most phenolic resin penetrating into the paper body, with limited resin remaining on the surface.
For this reason, the two-step process is realized through two independent process sections: the first section performs kraft paper impregnation followed by drying and cooling, while the second section carries out secondary phenolic resin coating, also followed by drying and cooling.
This separated process structure allows independent control of internal resin penetration and surface resin build-up.
This system is used to produce phenolic impregnated and coated kraft paper for film-faced plywood used as construction shuttering panels, ensuring stable surface durability, reliable concrete release performance, and consistent behavior during plywood hot pressing.
Process Configuration
1 unwinder with auto splicer 2 one step impregnator 3 heating oven 4 one step cooler 5 two step coater 6 heating oven 7 two step cooler 8 web aligner 9 Tractor 10 paper cutter 11 conveyer 12 stacking
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