The back-molding of fabrics is a convenient alternative to the labor-intensive method of laminating plastic

parts for car interior trim, for example. Depending on the shape of the part, the fabric is either fed from the

roll or cut to size. The final edge trimming, folding and tucking of the fabric is usually carried out in

subsequent steps following back-molding

 

The strengths of the process

 

Adhesive-free composite system,

 

Solvent-free processing,

 

Excellent positive connection between carrier material and decorative fabric,

 

Reduction in the number of work steps,

 

Cost reduction due to higher level of automation

 

On the other hand, the following factors have to be taken into account when using

back-molding technology:

 

Sensitivity of the decorative fabric to pressure (luster, resilience),

 

Heat sensitivity of the decorative material (melting, decrease in thickness),

 

Moving of the decorative material (long flow paths, at flow lines),

 

Sink marks with rib structures, e.g. through injection molding without holding pressure,

 

Creasing of the fabric at the corners,

 

Formation of the fold,

 

Flash formation,

 

To protect the fabric, particularly in the vicinity of the gating points, use is sometimes made

of special processes such as injection-compression molding, the laminar flow method or the

melt strip deposition process.

 

 


2017年02月17日

Choosing and using the right mold cleaners
Three dimensional molded interconnected devices

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Back-molding of fabrics

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