문제 및 해결책

Q

Flow marks on foamed product surface (snakeskin pattern)

A

Surface defects are the result of the combined action of mold condition, process parameters, and material formulation; each factor must be systematically investigated and targeted optimization performed.

Molds & Tooling flow marks on foamed product surface snakeskin pattern process optimization

Q

Rigid foam shrinkage after demolding causing peeling from substrate

A

The core of shrinkage defects lies in the contradiction between material curing volume change and insufficient process compensation, which requires comprehensive control through formulation optimization and process adjustment.

Molds & Tooling shrinkage rate demolding rigid foam shrinkage after demolding causing peeling from substrate

Q

Excessive open-cell ratio of PU rigid foam reducing thermal insulation performance

A

This problem requires comprehensive analysis from multiple dimensions of materials, processes, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.

Processing Machinery foam stabilizer open cells closed-cell ratio gelation cells

Q

Soft foam sponge products show "tofu dregs" foam

A

This problem requires comprehensive analysis from multiple dimensions of materials, processes, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.

Processing Machinery catalyst gelation soft foam sponge products show tofu dregs

Q

Flame retardant affecting foaming effect

A

This problem requires comprehensive analysis from multiple dimensions of materials, processes, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.

Processing Machinery flame retardant catalyst foam stabilizer cells

Q

Excessive compression set

A

Deformation problems originate from internal stress caused by uneven shrinkage or heating in various parts of the product, and need to be systematically solved from three aspects: structural design, process parameters, and post-treatment.

Molds & Tooling compression set deformation density open cells crosslinking

Q

Poor foam resilience

A

This problem requires comprehensive analysis from multiple dimensions of materials, processes, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.

Processing Machinery density crosslinking deformation cells open cells

Q

Foaming direction anisotropy

A

This problem requires comprehensive analysis from multiple dimensions of materials, processes, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.

Extrusion & Post cells deformation foaming direction anisotropy

Q

Uneven thickness of continuous foamed board

A

This problem requires comprehensive analysis from multiple dimensions of materials, processes, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.

Processing Machinery uneven thickness of continuous foamed board process optimization

Q

Improper EPP steam pressure

A

This problem requires comprehensive analysis from multiple dimensions of materials, processes, equipment, and operation, and should be solved by systematically optimizing process parameters and the quality control system.

Molds & Tooling EPP pressure control deformation

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