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How to specify a Blow Mold

What to put on an RFQ for Blow Mold: the ratings, documents, and constraints that change the quote.

25 Oct 2026 · 3 min read · Tradinor Desk

Specification points for Blow MoldTRADINOR · FIGUREWhat to lock for Blow MoldFood or medicalProcessingPolymerForm
Put these on the RFQ for Blow Mold before you compare prices.

A buyer searching for Blow Mold is usually trying to stop a bad substitute. A resin, sheet, or rubber part is specified by the polymer, the grade, the form, and the properties the part must hold. The notes below are selection criteria for a Blow Mold. They are not a catalog promise. Confirm every rating on the current datasheet, drawing, or test report for the revision you will receive.

What has to be true of Blow Mold

A resin, sheet, or rubber part is specified by the polymer, the grade, the form, and the properties the part must hold. For a Blow Mold, start from the duty, then the interface to the rest of the machine or the room, then the document that proves the claim. A lower price that leaves one of those blank is a different product.

Blow Mold is easy to confuse with Extrusion Die. If the quote could be read as either, add the line that separates them: the rating, the fitment, or the standard named below. Link the drawing number to that line so receiving inspection can reject the wrong one.

Numbers that change the quote

Line What to write for Blow Mold
Food or medical Only with the file for that contact. Do not assume a natural color is approved.
Processing For a molder, the datasheet. This page does not set a process window.
Polymer Family and grade name or a datasheet.
Form Pellet, sheet, tube, or a molded part.
Properties The two or three numbers the design uses: strength, hardness, temperature, or flame.
Color and additive Color, UV, or glass fill, if they matter.

How to compare two offers

Lay both quotes for Blow Mold on one sheet and line up food or medical, processing, and polymer. If a cell is empty, the offer is not finished. Ask for the missing line in writing. When those match, the honest difference is lead time, the test evidence, and who carries the warranty. Do not average a fully specified Blow Mold with a cheaper line that omitted food or medical.

Documents worth having before the deposit

Ask for the datasheet of the exact grade. The file should name Blow Mold and the revision, not only the supplier’s homepage. A factory quality certificate such as ISO 9001 can sit beside that file. It does not replace it.

Failures that show up after delivery

  • Ignoring filler content.
  • Claiming food contact without the grade’s file.
  • Substituting a polymer because the abbreviation looks close.

On a Blow Mold, the expensive version of the first mistake is discovering it after the goods are in the crate. Put the rejection condition in the purchase order while the supplier can still restate the offer.

A worked RFQ line

Use this shape, then replace the brackets with your duty: “Blow Mold — State polymer, grade, form, and the properties the design uses.” That sentence is a template, not a rating of any brand. If a supplier’s datasheet uses different units, convert them onto this sheet so the next offer can be compared.

Where words like RoHS / CE belong

Searches often add a constraint to Blow Mold: RoHS / CE, or stainless / corrosion. Keep those on this page. RoHS is a material limit. CE is a declaration that lists the rules relied on. Ask for the document that names this part number and revision. Name the alloy or the coating and the chemical it must survive. Stainless is a family, not a guarantee. If you need a third constraint, add it as another line on the same drawing. A second URL that only swaps the adjective does not give a buyer a second fact.

Related in this section: how to specify Extrusion Die.

Questions buyers actually ask

What should an RFQ for Blow Mold include?

State polymer, grade, form, and the properties the design uses.

Is a cheaper Blow Mold the same part?

Only if food or medical, processing, and the documents match. A missing line is a different offer.

Do waterproof, OEM, or IP words need their own page?

No. For Blow Mold they are extra lines on this specification. Ask for the test or the drawing that gives the word a value.