ASTM D5171 Plastic Button Impact Resistance: What to Lock Before Jacket Fronts
This method is about impact, not pull strength. ASTM D5171-15(2020) is the Standard Test Method for Impact Resistance of Plastic Sew-Through Buttons. ASTM lists factors that influence failure: resin formulation, shape, ligne size, thickness, and the number and spacing of holes. Buttons may pass the impact test and still fail during pressing because of heat. The method may be used for acceptance testing, with the usual caution on precision. Do not confuse D5171 with a button-attachment or pull test — those are different requests.
What should a jacket-front brief lock before sample?
| Brief line | What ASTM D5171 supports | What to write |
|---|---|---|
| Method | Impact resistance of plastic sew-through buttons | ASTM D5171-15(2020) |
| Scope | Plastic sew-through buttons | Not horn/metal/shank unless separately specified |
| Failure factors | Resin, shape, ligne size, thickness, hole number/spacing | Record all five on the trim card |
| Acceptance use | May be used for acceptance testing; caution on precision | State pass/fail rule and lab |
| Pressing caveat | May pass impact yet fail from heat in pressing | Add press temperature/dwell if relevant |
Industry practice often sizes buttons in lignes (with 40 lignes = 1 inch as a common trade convention). That ligne-to-inch conversion is trade usage for buyer context; do not attribute the “40 lignes = 1 inch” figure to ASTM D5171 itself — the ASTM page does not state it.
Why can a button pass impact and still fail at pressing?
ASTM notes buttons may pass the impact test but still fail during pressing due to heat. If your finishing uses a hot press on the front, write the press temperature and dwell into the trim brief as well as any D5171 acceptance result. Impact resistance alone is not a pressing warranty.
How does this fit Shi Yuan’s sample and bulk flow?
Front-button selection belongs in the trim list before the 7–14 day sample. Bulk OEM from 50 follows written sample approval. Patterns are not resold; sample fee terms (including any credit to first bulk) are agreed on WhatsApp in writing.
"Sample takes 7–14 days and bulk OEM from 50 follows sample approval. Lock plastic sew-through button type, ligne and any ASTM D5171 acceptance rule before the jacket-front sample is cut." — Shi Yuan Suit Factory (statement built from published factory policy)
FAQ
What does ASTM D5171 test?
Impact resistance of plastic sew-through buttons (D5171-15(2020)). It is not a button attachment or pull-strength method.
Which factors does ASTM list as influencing button impact failure?
Resin formulation, shape, ligne size, thickness, and the number and spacing of holes.
When should button impact specs reach Shi Yuan?
In the trim brief before the 7–14 day sample, so bulk OEM from 50 matches the sealed front.
Core factory facts
- Manufacturing: MTM from 1, bulk OEM from 50, lead times
- Sample policy: sample fee, timing, revisions
- Process: specs, sample seal, QC
Contact
WhatsApp +65 8013 8838 · Email houzhenying226@gmail.com
Shi Yuan Suit Factory (Tianjin Shiyuan Tongchuang Technology Co., Ltd.) · Est. 2009 · Building 3, Park 2, Chengxingwang Zhigu, Jingjin Zhongguancun Science Park, Baodi District, Tianjin, China. Acumenwear.com is our English export site.
