Pre-Sintered PTFE Resin — Molding, Ram-Extrusion & Billet Grades
Peflon is a China manufacturer supplying pre-sintered PTFE free-flow resin for industrial compression molding and ram extrusion — work directly with a production-focused supplier, not a trading layer.
- Five particle-size and process-matched grades, real TDS on file for each
- Distinct product line from Peflon’s suspension molding powder — see below for which one fits your process
- REACH/RoHS関連文書、サンプルは契約前に入手可能です。
PTFE予備焼結樹脂とは何ですか？
予備焼結PTFEは、別名 部分焼結PTFE or PTFE free-flow resin — is polytetrafluoroethylene (PTFE, CAS 9002-84-0）樹脂で、最終焼結前に制御された熱処理を受けています。通常、生産が 冷間成形工程 such as compression molding or ram extrusion, where material handling and shape retention before full sintering are critical. Peflon’s grades are tested against ASTM D4894, the standard specification for PTFE granular molding and ram extrusion materials.
Because the resin is only partially sintered, it flows and compacts predictably during pressing, then completes densification in the final sinter. This is a distinct product line from Peflon’s suspension-polymerized molding powder — both are compression-molded, but pre-sintered free-flow resin is supplied further along the processing chain, with different bulk-density and flow characteristics matched to ram extrusion and automated molding lines.
PTFE Pre-Sintered Resin Properties
All five grades share a common base profile from Peflon’s TDS testing — particle size and flow/shrinkage behavior are the main variables between them (see Grade Selection below for grade-by-grade values).
| 特性 | 代表値 | 試験方法 |
|---|---|---|
| 引張強度 | 25.5–30 MPa | GB/T 1040.0, HG/T 2902 |
| 破断伸度 | 290–350% | GB/T 1040.0, HG/T 2902 |
| かさ密度 | 750–800 g/L | — |
| 融点 | 327 ± 5℃ | HG/T 2902 |
| Standard relative density | 2.130–2.180 | — |
| Thermal instability index | ≤ 30 | — |
| 水分含有量 | ≤ 0% | Infrared moisture analyzer |
Pre-Sintered PTFE Grades & Data Sheets
Five pre-sintered PTFE grades — particle size and flow behavior are the main variables. Click a grade to download its Technical Data Sheet (PDF).
| グレード | 粒子径 | 引張強度（MPa） | 伸び率（%） | 代表的な用途 |
|---|---|---|---|---|
| PF-M1 | 200–400 µm | ≥25.5 | ≥290 | Molding rods, tubes, plates — automatic extrusion |
| PF-M2 | 401–600 µm | ≥25.5 | ≥290 | Molding rods, tubes, plates — automatic extrusion |
| PF-M3 | 601–900 µm | ≥25.5 | ≥290 | Molding rods, tubes, plates; engineering plastic additive |
| PF-FF | 450 ± 50 µm | ≥30 | ≥350 | Free-flowing powder for automated molding (Shore D 54–56, max sintering 380°C) |
| PF-P22 | 200–400 µm | ≥25.5 | ≥290 | Rods, tubes, plates — ram extrusion |
Note: typical values from Peflon’s TDS testing, data not for specification purposes — confirm final selection by processing method and end use.
Filled Pre-Sintered Grades
Eight filler types are also available in pre-sintered (“-E”) form for ram extrusion, in addition to the unfilled grades above. Not every filler has a pre-sintered variant — glass fibre + MoS₂, carbon fibre, PEEK and POB (Ekonol) are only offered as non-free-flow or free-flow powder, not pre-sintered.
| フィラー | Pre-Sintered Grade(s) | コンテンツ（wt%） | 特長 |
|---|---|---|---|
| ガラス繊維 | 15GF-E / 20GF-E / 25GF-E | 15 / 20 / 25 | Low creep, high wear resistance, good electrical properties |
| ブロンズ | 30BR-E / 40BR-E / 60BR-E | 30 / 40 / 60 | Low creep, high thermal conductivity, high hardness |
| コーラ粉末 | 15CAR-E / 25CAR-E | 15 / 20 | Low creep, high wear resistance, high PV value |
| グラファイト | 15GR-E | 15 | Low friction, low creep, corrosion resistance |
| ガラス繊維＋グラファイト | 15GF5GR-E | 15 + 5 | High wear resistance, low friction, low creep |
| アルミナ（Al₂O₃） | 7AL-E / 15AL-E | 7 / 15 | High-voltage insulation |
| ステンレス鋼粉末 | 25STST-E / 50STST-E | 25 / 50 | High dielectric strength, low cold flow, high thermal conductivity |
For full filler selection guidance across all three powder forms (non-free-flow, free-flow and pre-sintered), see Peflon’s Modified PTFE grade list.
PTFE予備焼結樹脂の用途
シール、ベアリング、電気絶縁材、化学処理装置、食品・医薬品業界など幅広い分野で使用されています。
ガスケット
Sealing of reactors, pipes and valves — a common application area tracked by the 流体シール協会, 北米のシーリング製品メーカーの業界団体。.
PTFE予備焼結樹脂の加工
Processing of PTFE pre-sintered compounds includes dry pressing, hot-press molding, sintering and post-processing — matched to the grade’s particle size and flow behavior.
圧縮成形
Processors dry-press pre-sintered PTFE powder in a mold under pressure, then sinter above 327°C to fuse the particles into a dense, void-free billet or sheet.
PTFE圧縮成形プロセス
High-pressure shaping of pre-sintered PTFE resin in molds — precise parts with exceptional chemical resistance and durability.
PTFEラム押出工程
Powder is pressed, heated and extruded, then cooled, demolded, cut and QC’d — continuous rod and tube profiles with uniform density.
PTFE Pre-Sintered Resin Chemical Compatibility
Pre-sintered PTFE shares PTFE’s essentially universal chemical resistance — the exceptions below are the rare cases worth flagging before you finalize a spec.
| 化学 | クラス | 抵抗 |
|---|---|---|
| 硫酸、塩酸、硝酸、フッ化水素酸 | 鉱酸 | 優れた、全濃度範囲 |
| 水酸化ナトリウム（40%） | 強固な基盤 | 優れる |
| アセトン、メタノール、トルエン | 溶媒 | 優れる |
| 塩素系溶剤 | 塩素系溶剤 | 優れる |
| 溶融アルカリ金属 | — | 推奨しません、あらゆる温度 |
| 元素フッ素 | — | 300℃以上での使用は推奨しません |
| 加圧された特定のフッ素化溶媒 | — | 200℃を超えると制限される |
Why Choose Peflon Pre-Sintered PTFE Resin
Buyers evaluating a new pre-sintered PTFE source usually care less about a supplier having “lots of grades” and more about avoiding two costly failure modes: a batch that turns out to be reprocessed/recycled powder instead of virgin resin, and a grade mismatch that only shows up after an hours-long sinter cycle has already run.
Traceable, Virgin-Only Pre-Sintered Resin
Pre-sintered powder’s biggest quality risk is virgin resin getting mixed with reprocessed/recycled powder — it changes flow and shrinkage behavior in ways that are hard to catch before you press a billet. Peflon supplies virgin-only pre-sintered grades with batch-level traceability from raw resin to finished bag.
- Per-batch tensile/elongation/particle-size testing on file, not generic datasheets
- No reprocessed or reground resin blended into pre-sintered grades
Grade Match to Cut Shrinkage & Scrap
Billets are typically pressed 3–5% oversized to allow for sintering shrinkage, and the offcut from machining to final size is scrap you’re paying for. Matching particle size and bulk density to your press or extruder up front — not after a failed run — is what keeps that shrinkage allowance predictable instead of a moving target.
- Particle size (200–900 µm across PF-M1/M2/M3) matched to your billet size and forming route
- Filled variants (glass/bronze/graphite/carbon/alumina/stainless, “-E” suffix) available for wear- or creep-critical parts
Validate Before a Full Sinter Cycle, Not After
A sinter cycle can run anywhere from a few hours to a full day depending on billet size — discovering a grade mismatch after that cycle is expensive. Trial samples let you confirm flow, compaction and sintering behavior on your own press before committing to a production order.
- サンプルには対応する技術データシートが同梱されます。
- Technical review of your application against grade-specific data before you order
認証済み・法令遵守の供給
ISO-certified quality management with REACH and RoHS documentation on file, backed by predictable 25 kg-bag packaging for repeat and scale-up orders.
- REACH/RoHS関連文書は保管済みです。
- Standard 25 kg bag, palletized for container loading
予備焼結PTFE ― よくある質問
予備焼結PTFEと完全焼結PTFEの違いは何ですか？
予備焼結PTFEは最終焼結前の状態で供給されるため、圧縮成形、ラム押出成形、ビレットプレスなどで先に成形してから熱処理工程を完了できます。完全焼結PTFEは既に高密度化されており、完成品または半完成品として使用されます。
予備焼結PTFEは溶融加工に適していますか？
No. PTFE (including pre-sintered grades) is not melt-processable. It is cold-formed under pressure, then sintered above ~360°C to fuse the particles into a dense part.
どの成形方法で予備焼結PTFEが使用されますか？
Compression molding (PF-M1/M2/M3 for sheet, billet, large shapes), ram extrusion (PF-P22 for rod and continuous profiles) and automated molding (PF-FF free-flow powder). Choose the grade that matches your press or extruder and target density.
予備焼結PTFEにガラス、炭素、青銅を充填できますか？
The five grades above are unfilled base resin. For glass, carbon, graphite or bronze-filled PTFE compounds, see Peflon’s modified PTFE overview or the dedicated glass-filled, graphite-filled と bronze-filled PTFE lines.
予備焼結PTFEはどのように保管・取り扱うべきですか？
成形前は、粒子の清浄度と水分が部品品質に直接影響するため、清潔・乾燥・冷涼な場所に汚染から離して保管してください。成形・焼結の工程に合わせて取り扱ってください。
Related Products of Pre-Sintered PTFE Resin
PTFE成形用パウダー
Need suspension-polymerized granular resin straight for compression molding, not pre-sintered free-flow stock? Peflon also supplies PTFE molding powder.
PTFEとは
New to PTFE or comparing raw-material forms? See Peflon’s full PTFE material overview.
PFA材料サプライヤー | Peflon
Need melt-processability instead of cold-forming? Peflon also supplies PFA, extending to 260°C with full melt processing.
予備焼結PTFEの技術サポート
予備焼結PTFEの選定と成形には、グレード選択、プレス圧力、焼結スケジュール、フィラー選定など、実際のエンジニアリング上の課題が伴います。当社の技術ライブラリでは、Peflon材料チームによる実践的なガイダンスを提供しています。
PTFE：適切なグレードの選び方
How to match particle size and flow behavior to your press or extruder before you order.
圧縮成形とは?
The fundamentals of compression molding for PTFE and other engineering plastics.
圧縮成形の基本:知っておくべきこと
Common press-cycle and billet-sizing mistakes buyers run into with compression molding.
カスタム予備焼結PTFEグレードを入手
Tell us your forming route — compression molding, ram extrusion or automated molding — plus part size and target density. Our engineers will match a grade, send the TDS and reply within 24 hours.