polishing templates

Polishing Templates

polishing template

PR Hoffman is a world leader in the design and construction of waxless mount polishing template Templates are uniquely designed to fit each customer’s specific polishing application. PR Hoffman works with each customer to achieve an approved design so you can be sure the template you receive will meet your physical specifications and will perform well in your unique processing environment. Templates can be used in any polishing application, flip polish, touch polish, single side polish or CMP. This product can help to save both time and money by eliminating the repetitive work required when waxing mounting, de-mounting and then cleaning the wax from the part. PR Hoffman custom manufactures waxless mount assemblies for any single-side process such as Silicon wafers, Silicon Carbide (SiC) wafers, silicon wafers, compound substrate wafers, glass wafers, ceramics, along with virtually any flat and parallel part that requires a polished surface.

Design

By providing the basic dimensions required for a single-sided polishing template to fit your machine, PR Hoffman can begin the product design process. Other critical parameters include wafer size / hole diameter, wafer final thickness / work hole (pocket) depth, characteristics of the wafer material.

 

polishing template design

Each template is backed with a pressure-sensitive adhesive, specifically suited to withstand the effects of the polishing process. Our templates are assembled in a clean, climate-controlled environment to limit particle contamination. All template edges are milled smooth to prevent particle introduction during the polishing process. The final product is sealed in one-load packages to keep templates clean and uncontaminated until use.

Template Design

Materials

Wafer type and polishing environment will help determine the appropriate polishing pad for your application. PR Hoffman offers a variety of polishing pad to fit each application. We use a buffed porous mounting material that, when wet, produces the necessary adhesion to hold the wafer in place. The buffed mounting material allows the wafer to rotate in the pocket. To ensure that the wafer stays in place, we add a FR-4 carrier that has been CNC machines to exact customer specifications. This special manufactured FR-4 has superior thickness control and optimum surface finish.

Pad Material Guide

Quality

polishing template quality

PR Hoffman templates are made flat to stay flat. The buffed poromeric material is backed by a non-absorbent, non-compressible film. The pad stays resilient evenly across the full width of the recess, producing measurably flatter wafers. Every template is lot number identified to ensure full lot traceability after removal from clean packaging. PR Hoffman maintains raw material traceability to production lot numbers for a minimum of 5 years. Each type of fixture lot is fully inspected by our highly trained quality team.

Standard Features

  • Flat - The buffed poromeric is backed by a non-absorbent, incompressible film. The pad stays resilient evenly across the full width of the recess, run after run, producing measurably flatter wafers.
  • Long-Lasting - Adhesives specifically selected for this application withstand the effects of the polishing process.
  • Clean - Templates are assembled in a clean, climate-controlled environment to limit particle contamination.
  • Prevent Scratches - All edges of the FR4 template are milled smooth to prevent introduction of glass fibers during polishing.
  • Load Size Packaging - Templates are sealed in durable plastic sleeves. Each package contains only enough templates for one machine load to keep them free of contamination until use.
  • Easy Installation - The template assembly is backed with a pressure-sensitive adhesive. Just peel away the release paper and press the assembly onto the carrier, per the mounting instructions supplied with each shipment.
  • Common sizes - Template sizes (up to 600mm diameter) for common silicon wafer and other substrates, for single-side polishers using waxless mounting polishers. Templates are available to hold standard wafer diameters, and parts of any size or shape.
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What's New

Now Introducing – CXT Templates – Chemically Resistant Templates

Designed specifically to be used with SiC wafers - CXT templates are a single shell construction that provides improved COO and increases life time while reducing machine down time - please contact us to find out more!


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