PTFE leh fluoroplastic products siamtu professional Jiangsu Aokai New Materials chuan injection molding equipment-a demolding leh anti-stick scenario atana PTFE high-temperature tape thlan dan tur a share a ni.
I. Temperature-Based Selection: Adhesive Layer leh Substrate-a Heat Resistance ngaihtuah
PTFE tape hi hmun hnih a awm a, chungte chu substrate (a tlangpuiin fiberglass fabric PTFE hmanga khuh) leh backing adhesive te an ni. Adhesive layer hi performance bottleneck a ni tlangpui.
1. Hnathawh chhunzawm zel tur temperature ≤ 260°C (General plastics & partial engineering plastics) .
Thil hman tur: PE, PP, PS, ABS, soft PVC, EVA, bakah PA, PBT leh thil dang temperature hniam zawka siam te. Thil thlan tur: Standard fiberglass hmanga tihchak PTFE tape, silicone pressure-sensitive adhesive (PSA) hmanga siam. Thickness rawtna: 0.13 mm emaw 0.18 mm emaw, conformability leh service durability te a inthlau hle. Key notes: Hei hi PTFE tape tan chuan working range tha ber a ni a, chemical stability tha tak leh release performance tha tak a nei a ni.
2. Hnathawh chhunzawm zel tur temperature 260°C ~ 300°C (High-temperature engineering plastics) .
Thil hman tur: PC, PA66, POM, PET, high-temperature PPA, modified PPO leh temperature sang tak injection mold dangte. Thil thlan tur: Fiberglass PTFE tape, temperature sang tak do thei silicone adhesive hmanga siam. Silicone adhesive pangngai chuan a upa nghal vat ang a, tackiness a hloh ang a, he temperature range hnuaiah hian residue a hnutchhiah ang. A thuk tur rawtna: 0.18 mm emaw 0.25 mm emaw. Adhesive leh substrate layer thick zawk hian thermal buffering leh wear resistance tha zawk a pe a ni. Critical confirmation: Supplier-te hnena hun rei tak chhunga temperature resistance 280°C aia sang nei adhesive system te tarlang la, adhesive hian heat sang tak hnuaiah mold a ti bawlhhlawh dawn em tih finfiah rawh.
3. Instant peak temperature 300°C ~ 400°C (A bik takin plastic lumna sang tak emaw, tualchhung hot spot emaw)
Thil hman tur: PEEK, LCP, PPS, PEI, a bik takin hot runner nozzle leh partial extrusion die head bulah hmuh tur a awm. Selection warning: Pressure-sensitive adhesive rintlak reng reng hian he temperature range hi a tuar thei lo. Adhesive-backed PTFE tape eng pawh chu a chhiat nghal vek ang a, thil siam zawh tawhte chu a carbonize ang a, a ti bawlhhlawh ang. A chinfel dan dang:
1. Adhesive tel lo PTFE fiberglass fabric, mold clamping frame, strip emaw high-temperature structural adhesives (pressure-sensitive lo adhesives silicone sealants ang chi) hmanga mechanically fixed.
2. Fusible fully fluorinated PFA film tape, mold chunglamah hot air welding hmanga inzawm. 260°C leh hun rei lote chhunga 300°C-a awm chhunzawm zel a tuar thei a, chutih rualin self-adhesive tape angin flexible takin thlak theih a ni lo. Optimized alternative proposal: Chutiang temperature sang takah chuan mold PTFE coating emaw nano ceramic high-temperature resistant coating emaw hi a tha zawk.
II. Material Property-Based Selection: Match Wear Resistance, Corrosion laka invenna leh Release mamawh te
Plastic molten physical leh chemical property te hian tape surface functionality leh structural strength mamawh chu a hril a ni.
1. Tacky sang tak / mold-prone thil chi hrang hrang
A aiawh tur thil: EVA, hot melt adhesive, TPE, TPU, PP grade siam danglam thenkhat. Selection key points: PTFE tamna leh dense coating nei high-release tape thlang rawh. Pure PTFE film tape (fiberglass reinforcement tel lo, tensile strength hniam, stress hniamna hmun atan chauh a tha) emaw premium fully-impregnated fiberglass PTFE tape emaw chu dah pawimawh ber rawh. Pure PTFE hnaih zawk surface hian anti-stick performance tha zawk a pe a ni.
2. Glass fiber / mineral khata khat reinforced materials
A aiawh tur thil: Glass fiber hmanga tihchak PA, PP, PBT, calcium carbonate hmanga khat PP. Wear mechanism: Flowing melt hian liquid sandpaper angin hna a thawk a, PTFE coating pangngai chu rang takin a abrading a; fiberglass substrate langsar tak chuan adhesion defect a siam ang. Selection pawimawh tak takte chu:
1. Thickness ngaih pawimawh ber: Heavy-duty wear-resistant tape 0.25 mm emaw a aia thuk zawk thlang rawh.
2. Structural reinforcement: Single thin coating ai chuan multi-layer PTFE coating emaw surface hardening treatment hmanga siam product thlang rawh.
3. Replacement strategy: Chutiang hnathawhna hmuna hman theih pangngai angin tape chu en la, permanent service life zawm ai chuan periodic inspection leh replacement cycle siam rawh.
3. Thil chi hrang hrang, additives corrosive emaw precipitating emaw nei
A aiawh tur thil: PVC khauh (HCl a tichhuak), meialh titawp thei compound (brominated, phosphorus-based flame retardant precipitation), fluorinated processing aids. Failure mode: Precipitates hian adhesive layer a tichhe emaw, substrate a luhchilh emaw a, chu chuan tape blistering leh delamination a thlen thin.
1. Adhesive chemical resistance: Silicone adhesive hian acid chak lo, plasticizers leh precipitates dangte lakah inertness a nei tawk tih finfiah rawh.
Cavities, slider leh lifter: Tape hi mold-adhesive hmunah an hmang tlangpui. Complex curved surface-a fit turin 0.13 mm tape te tak te, extensibility tha tak nei a ngai a ni. Ejector pin leh vent slot te chu pumpelh la; tape thickness hian product dimensional tolerance a tidanglam dawn avangin precision parts tan fimkhur rawh. Hot runner plate leh nozzle tips: Hetah hian temperature sang tak tak a awm a; flash adhesion ven nan mechanically fixed adhesive-free PTFE puan chauh hman theih a ni. Self-adhesive tape hi khap tlat a ni.
2. Extruder leh downstream hmanrua te
Extrusion die lips / outlets: Discharge port-a melt awmkhawm leh stringing awm loh nan. Die orifice dimension tihdanglam loh nan ultra-thin (0.08 mm–0.13 mm) high-release tape thlang rawh. Tape chu outlet hmalam atanga a tawp lam thlengin wrap la, lap joint-a melt penetration tihtlem nan. Pelletizer template: Temperature sang tak melt leh glass fiber abrasion-a direct-a awm. Heavy-duty tape 0.25 mm aia sang chu tih ngei ngei tur a ni a, regular consumable anga enkawl a ni. Cast film roll / traction press roll: Anti-stick leh tihfai awlsam. Silicone-backed PTFE tape hi rollers-ah khuh theih a ni a, adhesive-free PTFE fiberglass sleeve pawh hman theih a ni bawk. Tape temperature resistance chu roller surface temperature nen a inmil tih finfiah rawh, heating a awm chuan.
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