A buyer searching for Spunbond is usually trying to stop a bad substitute. A fabric is specified by fiber, construction, weight, width, and the finish. The notes below are selection criteria for a Spunbond. 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 Spunbond
A fabric is specified by fiber, construction, weight, width, and the finish. For a Spunbond, 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.
Spunbond is easy to confuse with Sheer Curtain. 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 Spunbond |
|---|---|
| Fiber | Composition, including elastane if it is there. |
| Construction | Weave or knit, and ends and picks or GSM. |
| Width and length | Usable width and the roll length. |
| Finish | Preshrink, coating, water repellency, or flame retardancy, each with a test if claimed. |
| Color | Lab dip and the light under which it is judged. |
| Care and shrinkage | The shrinkage figure after the stated wash. |
How to compare two offers
Lay both quotes for Spunbond on one sheet and line up fiber, construction, and width and length. 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 Spunbond with a cheaper line that omitted fiber.
Documents worth having before the deposit
Ask for a hang or a test report for any flame or water claim. The file should name Spunbond 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
- Buying coated fabric when the process needs a breathable one.
- Ignoring usable width.
- Approving a hand feel and leaving shrinkage untested.
On a Spunbond, 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: “Spunbond — State fiber, GSM, width, finish, and shrinkage.” 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 IP67 belong
Searches often add a constraint to Spunbond: IP67, or OEM / custom. Keep those on this page. IP67 is dust-tight plus a defined temporary immersion. It is not a rating for living underwater, and it says nothing about sunlight or salt. OEM or custom means a drawing, a revision, and a statement of who owns the tool. Without those, you are buying the catalog part. 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 Sheer Curtain.
Questions buyers actually ask
What should an RFQ for Spunbond include?
State fiber, GSM, width, finish, and shrinkage.
Is a cheaper Spunbond the same part?
Only if fiber, construction, and the documents match. A missing line is a different offer.
Do waterproof, OEM, or IP words need their own page?
No. For Spunbond they are extra lines on this specification. Ask for the test or the drawing that gives the word a value.