What a PVC Door and Window Sealing Strip Co-Extrusion Line Delivers
A PVC door and window sealing strip co-extrusion line is a dedicated profile extrusion system that forms weather stripping in a single, continuous pass by joining a rigid or semi-rigid PVC carrier with a soft sealing lip made from thermoplastic elastomer or a soft PVC compound. The result is a finished gasket that no longer needs to be assembled from two separate parts: the mounting base, which locks into the profile groove, and the flexible lip, which compresses against the frame to block wind, water, dust, and noise. For architectural aluminum, uPVC, and wooden door and window systems, this integrated strip is the difference between a window that leaks on the first storm and one that stays tight for decades.
Faygo, pabrik Wanplas, has spent 22 years building pipe and profile extrusion systems, and its FAYGOPLAST platform in Zhangjiagang covers 26,650 square meters with three specialized factories. The sealing strip co-extrusion line described here is built on the same profile extrusion knowledge that Faygo applies to PVC window profiles, decorative profiles, and custom extrusions, then extended with a second extruder and a co-extrusion die so that hard and soft materials fuse at the die land rather than being glued afterward. Every line leaves the factory after a Uji operasi terus-menerus selama 72 jam and is CE and ISO certified.
This article explains how the line is configured, what each section does, which strip geometries map to which machine layouts, how materials and weather resistance interact, how co-extrusion compares with single-material extrusion, and how to select the right configuration for a given architectural profile. It also walks through the standards that govern door and window sealing strips in China dan internasional.ly, and closes with the selection guide, application industries, service support, and a list of frequently asked questions.
Daftar Isi
Gunakan titik-titik referensi di bawah ini untuk melompat ke bagian pada halaman ini:
- What a PVC door and window sealing strip co-extrusion line delivers
- Bagaimana proses co-extrusion bekerja secara bertahap
- Konfigurasi jalur produksi dan spesifikasi teknis yang umum
- Jenis strip dan konfigurasi mesin yang diperlukan
- Bahan, ketahanan cuaca, dan kinerja UV
- Co-extrusion versus ekstrusi bahan tunggal
- Faygo PVC profile co-extrusion product spotlight
- Panduan pemilihan: menyesuaikan permintaan dengan konfigurasi
- Industri aplikasi dan produk akhir
- Standar, pengendalian kualitas, dan pengujian ketahanan cuaca
- Instalasi, pengaturan, dan dukungan layanan
- Frequently asked questions
- Bicarakan dengan Faygo tentang jalur strip pengencangan Anda
Bagaimana Proses Co-Extrusion Berjalan Langsung
Co-extrusion is the simultaneous extrusion of two or more polymer melts through a shared die so that they bond at the interface while still molten. For a door and window sealing strip, the line normally carries one parallel twin-screw extruder for the PVC carrier and one single-screw extruder for the soft TPE or soft PVC lip. Both melts meet inside a co-extrusion die where the flow channels are balanced so the two materials joint without delamination, then the combined profile enters the calibration and cooling section as one piece.
Rincian lengkap dari bahan mentah hingga strip yang dipotong adalah sebagai berikut:
1. Persiapan dan pemasukan bahan. The PVC compound is dosed through a loss-in-weight feeder or volumetric feeder into the twin-screw barrel, while the TPE or soft PVC is fed into the single-screw barrel from a separate dryer or hopper. PVC for rigid carriers is typically a calcium-zinc stabilized compound; the soft lip uses a thermoplastic elastomer such as TPE-S, TPV, or a plasticized soft PVC. Feed accuracy matters because the lip-to-base ratio defines the final compression and recovery behavior of the gasket.
2. Plastifikasi di drum.Di dalam tabung ganda berputar paralel, PVC dicampur, dipelintir, dan homogenisasi pada suhu cair sekitar 175 hingga 200 derajat Celsius. Tabung ganda tunggal memelintir bahan lunak pada suhu yang lebih rendah, sering 160 hingga 185 derajat Celsius, untuk melindungi elastomer dari degradasi termal. Desain katup, rasio L/D, dan profil suhu tabung disesuaikan sehingga kedua cairan mencapai die dengan viskositas yang sama.
3. Die co-extrusion.Die adalah inti dari garis. Ia menerima dua aliran cairan dan menggabungkannya sehingga bibir yang lembut diisolasi atau dilaminasi pada dasar yang kaku. Die yang dirancang dengan baik menjaga shear rendah, menghindari zona stagnan di mana PVC dapat terurai, dan memungkinkan operator untuk mengatur ketebalan bibir secara terpisah dengan mengubah output satu-satunya. Die multi-kavitas dapat membentuk beberapa strip berdampingan untuk meningkatkan throughput.
4. Vacuum calibration and cooling. Directly after the die the profile passes through a vacuum calibration table. A vacuum calibration sleeve fixes the outer dimensions of the rigid base to tight tolerances while spray or bath cooling sets the shape. For sealing strips the critical dimension is the barb or bulb that locks into the profile groove, so the calibration sleeve is engineered to hold that feature within a fraction of a millimeter.
5. Haul-offCaterpillar pengangkutan menggenggam strip tanpa merusak bibir yang lembut dan menariknya ke depan dengan kecepatan jalur yang stabil. Karena bibir yang lembut hampir tidak memiliki ketegangan, pengangkutan harus menerapkan tekanan yang sama di seluruh lebar; banyak jalur menggunakan desain pita lebar atau dua jalur. Kecepatan jalur adalah kunci utama untuk output dan ditetapkan oleh kapasitas pendinginan dan kekuatan cairan bibir.
6. Pemotongan dan pengumpulan.Pemotong serbaguna yang dikendalikan servo atau pemotong panjang tetap memotong strip kontinu menjadi gulungan atau panjang. Untuk produksi jendela otomatis, strip biasanya diputar ke gulungan; untuk gasket pengganti, dipotong menjadi panjang. Potongan-potongan tersebut kemudian diinspeksi, dipacking, dan dipindahkan ke proses berikutnya.
Typical Line Produksi Konfigurasis and Technical Specifications
A sealing strip co-extrusion line is scaled by strip width, lip complexity, and required output. The table below shows three representative configurations that Faygo builds on the FAYGOPLAST profile platform. These are configuration classes rather than fixed model codes; each line is engineered to the customer’s strip cross-section and target output.
| Paramater | Compact line | Standard line | High-output line |
|---|---|---|---|
| PVC carrier extruder | Parallel twin-screw 51 mm | Parallel twin-screw 65 mm | Parallel twin-screw 65 mm, high torque |
| Soft lip extruder | Single-screw 30 mm | Single-screw 45 mm | Single-screw 45 mm, twin feed |
| Screw L/D ratio | Twin 40:1, single 25:1 | Twin 44:1, single 28:1 | Twin 48:1, single 30:1 |
| Die ekstrusi bersama | Single or double cavity | Double or four cavity | Four or six cavity |
| Strip width range | 6 to 20 mm | 10 to 35 mm | 15 to 50 mm |
| Calibration table length | 3 m vacuum | 4 to 6 m vacuum | 6 to 9 m vacuum |
| Line speed | 1 to 4 m/min | 2 to 6 m/min | 3 to 10 m/min |
| Combined output | 40 to 70 kg/h | 70 to 120 kg/h | 120 to 200 kg/h |
| Haul-off type | Belt caterpillar | Wide belt caterpillar | Dual-track servo |
| Pemotong | Fixed-length saw | Servo fly knife | Servo fly knife, multi-station |
| Control system | PLC plus HMI | PLC plus HMI, inverter drives | PLC plus HMI, servo with data logging |
| Certification | CE, ISO | CE, ISO | CE, ISO |
The numbers above are configuration ranges. The exact screw diameter, die cavity count, and line speed are set after Faygo receives the customer’s strip cross-section drawing and target meters per minute. Because the line is a profile system rather than a fixed package, the same haul-off and cutter can serve different dies, which protects the buyer from being locked into one strip design.
Strip Types and the Machine Konfigurasi They Require
Architectural sealing strips come in several cross-section families, and each family stresses a different part of the line. A wool-pile-free flexible lip wants a clean soft-material channel; a bulb seal wants balanced cooling so the bulb stays round; a fin or flap seal wants a thin lip that needs precise speed control; a multi-chamber carrier wants a stable rigid base. The table below maps common strip types to the machine configuration that produces them reliably.
| Strip type | Base material | Lip material | Recommended extruder set | Die and cooling note |
|---|---|---|---|---|
| Clip-in barb seal | Rigid PVC | TPE or TPV | Twin 51 + single 30 | Tight calibration sleeve for barb |
| Bulb weather seal | Rigid or semi-rigid PVC | Soft PVC or TPE | Twin 65 + single 45 | Symmetric cooling to keep bulb round |
| Fin or flap seal | Rigid PVC | Soft PVC | Twin 51 + single 30 | Low shear die, precise speed control |
| Multi-chamber carrier | Rigid PVC | TPE at one edge | Twin 65 + single 45 | Longer calibration, stiff base cooling first |
| Dual-lip compression seal | Semi-rigid PVC | TPE-S both lips | Twin 65 + single 45 twin feed | Two soft channels balanced in die |
| Wiper blade seal | Rigid PVC | Soft PVC | Twin 51 + single 30 | Thin lip needs steady haul-off tension |
When a customer already produces single-material PVC strips and wants to add a soft lip, the cheapest upgrade is usually a single-screw extruder plus a co-extrusion adapter and a new die, reusing the existing calibration table and haul-off. Faygo’s turnkey team reviews the current layout before recommending whether to add a second extruder or replace the line, which is where the selection guide in a later section helps.
Materials, Weather Resistance, and UV Performance
The performance of a sealing strip over its service life is decided mostly by the lip material, because the lip does the compressing and the base only has to hold position. The carrier is almost always a rigid or semi-rigid PVC chosen for dimensional stability and resistance to the groove; the lip is where weather resistance, low-temperature flexibility, and UV stability are won or lost.
| Material | Hardness (Shore A) | Low-temp flexibility | UV and weather resistance | Compression set | Typical use |
|---|---|---|---|---|---|
| Plasticized soft PVC | 55 to 80 | Fair, stiffens below 0 C | Moderate, needs stabilizer | Higher | Indoor and mild-climate gaskets |
| TPE-S (styrenic) | 50 to 85 | Good down to minus 30 C | Good with UV package | Low to moderate | General exterior weather strip |
| TPV (EPDM-like TPE) | 60 to 85 | Excellent, minus 40 C | Excellent, UV stable | Sangat rendah | Penutup eksterior yang keras, tahan lama |
| EPDM rubber | 55 to 80 | Excellent | Excellent | Sangat rendah | Premium co-extruded with PVC |
| Rigid PVC carrier | Shore D 70 to 80 | Brittle below minus 10 C | Good with TiO2 | N/A | Mounting base and barb |
For exterior doors and windows the lip should be a TPV or TPE-S with a UV stabilizer package and, for white or colored strips, a titanium-dioxide level that resists chalking. Pure plasticized soft PVC is the lowest-cost option and is acceptable for interior or sheltered gaskets, but it hardens and loses compression recovery faster outdoors, which is why co-extruding a TPE lip onto a PVC base is the common upgrade path. The base itself is typically a calcium-zinc stabilized rigid PVC with titanium dioxide for color retention, so the whole strip stays weather resistant without painting.
Ketahanan cuaca diukur dengan penuaan yang dipercepat: penuaan panas untuk memeriksa perubahan kekerasan, paparan ozon untuk ketahanan terhadap keretakan, dan siklus UV arus xenon atau fluorescent untuk memeriksa perubahan warna dan permukaan. Strip yang lulus uji ini akan tetap menjaga penutupnya setelah bertahun-tahun terkena sinar matahari dan siklus beku-beku, yang persis sesuai dengan persyaratan GB/T 12002 dan panduan ISO yang sesuai untuk produk pengencangan arsitektur.
Regrind handling is part of the material decision. The rigid PVC base can usually accept a controlled percentage of clean in-house regrind from start-up and edge trim without losing groove retention, provided the regrind is free of the soft lip material and is metered back through the loss-in-weight feeder rather than dumped in by volume. The soft lip, by contrast, is rarely reground into the same product because elastomer reprocessing changes hardness and recovery; off-grade soft material is better routed to a less demanding grade or a closed-loop compound stream. Faygo’s recipe system lets the operator set a separate regrind ratio for the base so the line stays consistent run after run. Color matching is another material task: white and foiled strips need a stable titanium-dioxide level and a compatible pigment package, while dark strips need carbon-black grade and loading chosen so the lip does not chalk under UV. Because the base and lip are dosed from separate extruders, each can carry its own color without cross-contamination, which is a quiet advantage of co-extrusion over painting a finished strip after the fact.
Co-Extrusion versus Single-Material Extrusion
Before co-extrusion became standard, many gaskets were either all-PVC strips or separate rubber lips pushed into a groove after the frame was made. Co-extrusion changes the economics and the performance at the same time. The comparison below helps a buyer decide whether the second extruder and co-extrusion die are worth the added complexity.
| Aspect | Single-material PVC strip | Separate lip inserted later | PVC plus TPE co-extruded strip |
|---|---|---|---|
| Kinerja penutup | Limited, hard lip | Baik jika bibir tetap berada di tempatnya | Best, bonded soft lip |
| Process steps | One extruder | Extrude plus assemble | One pass, two extruders |
| Bond reliability | N/A | Can loosen or fall out | Molecular bond at interface |
| Material cost | Low | Menengah | Menengah |
| Equipment complexity | Low | Low plus assembly | Medium, two extruders and die |
| Weather life | Short outdoors | Menengah | Long with TPV lip |
| Limbah dan perbaikan | Low | Tinggi dari perakitan | Rendah setelah penyesuaian |
The practical conclusion is that for any exterior or high-specification architectural profile, co-extrusion pays back through fewer assembly steps and a more reliable seal, while the all-PVC strip stays relevant only for the lowest-cost interior applications. The incremental cost of a second single-screw extruder is small against the labor saved by eliminating a post-assembly insertion step, and the bonded interface removes the most common field failure of inserted lips.
Floor space and utilities shape the decision as much as the hardware. A compact sealing strip line fits a modest bay because the downstream is short: die, a three-meter calibration table, a caterpillar haul-off, and a cutter form a line only a little longer than the profile it makes, with the two extruders mounted side by side at the head. A high-output six-cavity line needs more length for cooling and a wider haul-off, plus a larger chiller and air supply for the vacuum calibration, so the utility plan drawn during Faygo’s factory consulting stage should size the water and power before the machines arrive. The intelligent control system also supports remote monitoring, so a small team can run several lines from one control point, which is why the operating cost stays manageable even when output grows. When a plant later wants to double capacity, the usual path is to add a second line on the same platform rather than to overbuild the first one, keeping spare parts and recipes shared across the shop.
Faygo PVC Profile Co-Extrusion Product Spotlight
Faygo, pabrik Wanplas, menyediakan platform profil FAYGOPLAST yang digunakan dalam garis penutup ini. Dua modul produk ditunjukkan di bawah ini dengan tabel spesifikasi mereka. Keduanya mengandalkan 22 tahun pengalaman Faygo dalam ekstrusi pipa dan profil, 13 paten nasional termasuk 8 paten penemuan, dan produksi yang disertifikasi CE dan ISO. Setiap garis diuji selama 72 jam sebelum pengiriman.
Faygo PVC Door and Window Sealing Strip Co-Extrusion Line
This is the core line for the article topic. It pairs a parallel twin-screw extruder for the rigid PVC carrier with a single-screw extruder for the soft lip, and ships with a co-extrusion die, vacuum calibration table, caterpillar haul-off, and servo cutter sized to the ordered strip width.
| Item | Specification |
|---|---|
| Carrier extruder | Parallel co-rotating twin-screw, 51 or 65 mm, L/D 40 to 48 |
| Lip extruder | Single-screw, 30 or 45 mm, L/D 25 to 30 |
| Drive | Inverter atau servo, komponen listrik yang terkenal di seluruh dunia |
| Die ekstrusi bersama | Hard plus soft, 1 to 6 cavities, adjustable lip thickness |
| Calibration | Vacuum calibration table 3 to 9 m, water spray and bath |
| Haul-off | Caterpillar, belt or dual-track, speed 1 to 10 m/min |
| Pemotong | Servo fly knife or fixed-length saw, coil or length out |
| Control | PLC with HMI, recipe storage, real-time parameter adjustment |
| Output range | 40 to 200 kg/h combined, 1 to 10 m/min line speed |
| Strip width | 6 to 50 mm, custom cross-section supported |
| Uji sebelum pengiriman | Uji operasi terus-menerus selama 72 jam |
| Certification | CE and ISO certified |
Faygo PVC Window Jalur Ekstrusi Profil
Faygo’s broader profile extrusion line produces PVC window profiles, door frames, decorative profiles, and custom extrusions, and shares the same calibration, haul-off, and cutting technology used on the sealing strip line. Buyers who make both frames and gaskets can standardize on one supplier platform and one spare-parts list.
| Item | Specification |
|---|---|
| Ekstruder | Parallel twin-screw, 51 to 80 mm, L/D 40 to 48 |
| Profile types | Window frames, door frames, decorative, WPC composite |
| Die and calibration | Multi-profile die, vacuum calibration, spray cooling |
| Haul-off | Caterpillar, synchronized with extruder |
| Cutting | Planetary or servo fixed-length cutter |
| Control | Intelligent control, free parameter setting, real-time adjust |
| Output | Scaled to profile weight and line speed |
| Factory base | FAYGOPLAST, Zhangjiagang, 26.650 m², 3 pabrik |
| Certification | CE and ISO certified, 72-hour test |
Kedua modul disediakan sebagai sistem turnkey. Tim teknis Faygo merancang cetakan dari gambar sekrup pelanggan, menjalankan uji 72 jam pada strip atau profil yang sebenarnya, dan mendokumentasikan resep proses sehingga produksi dimulai dengan cepat setelah instalasi.
Selection Guide: Matching Demand to Konfigurasi
The right line depends on strip width, lip material, target output, and whether the buyer already owns profile extrusion equipment. The table below converts common demand statements into a recommended configuration on the Faygo platform.
| Demand | Recommended line | Lip material | Why |
|---|---|---|---|
| Start-up, narrow interior strips | Compact twin 51 plus single 30 | Soft PVC | Lowest entry cost, enough for 6 to 20 mm |
| Standard exterior weather strip | Standard twin 65 plus single 45 | TPE-S with UV package | Output yang seimbang dan umur yang tahan cuaca |
| Harsh climate, long life | High-output twin 65 plus single 45 | TPV or EPDM-like TPE | Very low compression set, UV stable |
| High volume, multiple cavities | High-output, six-cavity die | TPE-S or TPV | Maximizes meters per minute |
| Already own PVC profile line | Add single-screw plus co-extrusion die | Matches existing base | Reuses calibration and haul-off |
| Frames plus gaskets together | Window profile line plus strip line | Shared PVC base | One platform, one spare-parts list |
If the demand is uncertain, Faygo’s consulting team can model output from the target meters per minute and strip weight, then propose the smallest line that meets it, so the buyer does not pay for unused cavity count or screw diameter. Capacity expansion later is handled by adding cavities or a larger screw rather than replacing the whole line.
Industri Aplikasi and End Products
Strip pelindung yang dibuat pada jalur ini melayani setiap permukaan bangunan yang membutuhkan penghalang cuaca. Industri aplikasi utama adalah:
Residential and commercial windows. uPVC, aluminum, and wood-aluminum windows use clip-in barb and bulb seals to block air infiltration and rain. A well-made co-extruded strip keeps the frame quiet and dry and cuts heating and cooling loss at the gap.
Pintu masuk dan balkon. Swing, sliding, and folding doors use dual-lip and wiper seals. The soft lip compresses against the threshold while the base stays locked in the door leaf groove, which is where waterproof sealing is decided.
Curtain walls and facades. Large glazed facades rely on compression seals between glazing and frame. Because these seals see full sun and wind load, TPV or TPE-S lips are preferred for long service life.
Automotive and transport. Although this article focuses on architectural profiles, the same co-extrusion technology produces cabin and door seals for vehicles, trains, and buses where low-temperature flexibility and ozone resistance matter.
Enkapsulasi industri dan kulkas. Cold rooms and clean rooms need gaskets that stay flexible at low temperature and resist cleaning chemicals, which points to TPV lips on a rigid PVC or co-extruded base.
Enkapsulasi matahari dan luar ruangan.Kerangka modul PV dan kabinet luar menggunakan strip pelindung cuaca untuk menjaga debu dan kelembaban dari peralatan yang sensitif, lagi-lagi menguntungkan bahan bibir tahan UV.
Di seluruh industri ini, persyaratan umum adalah strip yang dapat dipasang dalam satu kali, tetap terikat, dan bertahan selama bertahun-tahun kompresi dan cuaca. Itulah persyaratan yang diselesaikan oleh co-extrusion, dan itulah mengapa Faygo menempatkan jalur ini sebagai sistem pengolahan pelindung cuaca yang tahan air, bukan sebagai ekstruder profil sederhana.
Standards, Quality Control, and Weather Resistance Testing
Architectural sealing strips are governed by material and performance standards. In China the key reference is GB/T 12002, the standard for plastic sealing strips used on doors and windows, which sets requirements for hardness, tensile strength, elongation, compression set, heat aging, and ozone resistance. Products intended for export are usually checked against the relevant ISO methods for rubber and plastic weather strip, and against regional building codes that cite weather tightness and air permeability.
Quality control on a Faygo line covers three layers. First, incoming compound is verified for filler load, stabilizer type, and melt flow rate so the barrel and die see a consistent melt. Second, the line is run during the 72-hour pre-delivery test to confirm steady output, stable dimensions, and a bonded interface with no delamination. Third, sample strips are cut and sent for accelerated weather testing: heat aging to confirm hardness change stays within limit, ozone chamber for crack resistance, and a UV cycle for color and surface change.
Compression set is the single most important field metric. A lip with low compression set returns to shape after being squeezed for years, so the door or window keeps sealing. TPV and EPDM-like TPE lead here; plasticized soft PVC is acceptable only where the seal is lightly loaded and sheltered. Faygo documents the lip material and the test result with each line so the buyer can show compliance to GB/T 12002 or the equivalent ISO method.
Kontrol dimensi adalah lapisan kedua. Bulb atau bulat yang menutup strip ke celah profil harus mempertahankan toleransi, atau strip akan keluar atau tidak masuk. Selubung kalibrasi vakuum dan pengangkutan yang dikalibrasi menjaga fitur ini dalam jangkauan yang ketat, dan Faygo mencatat dimensi as-built terhadap gambar pelanggan sebelum pengiriman.
Installation, Commissioning, and Service Support
Buying the line is only half the project. Faygo, pabrik Wanplas, supplies the full path from layout to stable production. The support covers:
Konsultasi pabrik.Desain listrik dan air, tata letak pabrik dengan desain pabrik 3D, konfigurasi pekerja dan pelatihan, dan konstruksi pabrik baru sebagai proyek turnkey. Untuk pabrik dengan peralatan yang lebih tua, Faygo menawarkan penggantian mesin lama dengan rencana yang bertujuan pada waktu henti nol, dan ekspansi kapasitas yang menghilangkan hambatan untuk menggandakan output.
Pengiriman turnkey.Desain jalur yang disesuaikan dari sekat cross-section, pengendalian kualitas yang ketat dengan uji 72 jam, dan layanan end-to-end yang mencakup pemilihan, desain, pembuatan, instalasi, pengaturan, pelatihan, dan pemeliharaan.
Spare parts dan garansi.Kebijakan grup Wanplas menyediakan spare parts gratis sebesar USD 500 setiap tahun dan penggantian bagian yang rusak dengan garansi. Hal ini memastikan jalur yang satu beroperasi tanpa persediaan yang besar, yang penting untuk pabrik skala kecil dan menengah.
Operasi dan dukungan jarak jauh.PLC dan HMI mencatat resep proses dan data operasi, dan Faygo menawarkan dukungan teknis 24/7 secara online serta pemantauan jarak jauh sehingga para insinyur dapat membaca data PLC dan merespon kondisi abnormal tanpa keterlambatan perjalanan yang lama. Penyimpanan resep pada media yang dapat dilepas memungkinkan pembuatan strip baru dengan mengisi set parameter yang disimpan.
Pabrik terbuka.Wanplas menyambut kunjungan pelanggan ke pabrik Zhangjiagang. Melihat ruang pabrik FAYGOPLAST, meja kalibrasi, dan jalur yang beroperasi sebelum pembelian mengurangi risiko kesalahan antara jalur yang dipesan dan produk asli.
Pengaturan dilakukan dalam urutan yang tetap: instalasi dan penyesuaian ekstruder dan jalur turun, koneksi utilitas, pengeringan dan pengisian bahan, menjalankan die dengan operator yang terlatih, menyesuaikan suhu dan kecepatan dengan resep, memeriksa dimensi pada meja kalibrasi, kemudian menjalankan uji 72 jam dan memotong strip sampel untuk uji cuaca. Pelatihan mencakup operasi harian, pembersihan die, perawatan pita pengangkut, pengaturan pemotong, dan sistem resep sehingga tim pelanggan dapat mengubah jenis strip tanpa bantuan dari luar.
Common Defects, Causes, and Preventive Maintenance
Even a well-built co-extrusion line shows characteristic defects when a parameter drifts. Knowing the cause lets the operator correct the strip before scrap accumulates. The defects below are the ones most often seen on sealing strip lines, together with the maintenance habits that keep them away.
Delamination at the hard-soft interface. The most serious defect is a lip that peels off the base. It is caused by a viscosity mismatch between the two melts, by too low a die temperature that prevents bonding, or by contamination at the interface. The fix is to balance the single-screw and twin-screw outputs so the two melts meet at matched viscosity, raise the die land temperature slightly, and keep both hoppers and barrels clean. A small amount of tie-layer or a compatible TPE grade also helps adhesion.
Out-of-round bulb or distorted lip. A bulb that flattens or a fin that curls comes from uneven cooling or from haul-off tension that is too high for the soft lip. The calibration table must cool the base first and the lip last, and the caterpillar pressure should be set just high enough to grip. Symmetric spray nozzles and a longer calibration table are the usual corrections on wider strips.
Surface streaking or die lines. Lines along the strip usually mean a dirty die, a dead spot where PVC decomposes, or a filler agglomerate. The remedy is regular die cleaning with the correct tool, a balanced screw that avoids stagnant zones, and compound screening before feeding. Faygo’s twin-screw design emphasizes self-cleaning kneading blocks so decomposed material does not build up in the barrel.
Dimension drift on the locking barb. If the strip no longer inserts or falls out, the calibration sleeve has worn or the haul-off speed has drifted against extruder output. Recurring dimension checks against the customer drawing, sleeve inspection, and closed-loop speed synchronization between extruder and haul-off prevent this. The PLC recipe stores the proven speed so the set point is not guessed after a changeover.
Yellowing or chalking outdoors.Ini adalah masalah bahan dan stabilisator, bukan kesalahan mesin. Hal ini muncul ketika bibir tidak memiliki paket UV atau dasar tidak memiliki cukup titanium dioksida. Memilih TPV atau TPE-S dengan stabilisator yang ditentukan dan dasar dengan muatan pigmen yang tepat menghilangkan masalah pada tahap resep, yang mengapa pemilihan bahan pada bagian sebelumnya sama pentingnya dengan perangkat keras.
Rencana pemeliharaan preventif. A simple weekly and monthly routine keeps the line at high overall equipment effectiveness. Weekly: clean the die and hopper throat, check haul-off belt tension and wear, verify cutter blade sharpness, and review the recipe against the running parameters. Monthly: inspect the calibration sleeve for scoring, check barrel and gearbox temperatures against baseline, lubricate the haul-off guides, and back up the recipe files. Quarterly: review screw and barrel wear with a process check, calibrate the loss-in-weight feeder, and confirm the vacuum calibration level. Because Wanplas supplies USD 500 free spare parts each year and warranty replacement, worn belts, blades, and seals are replaced without a large held inventory. The 24/7 remote support lets Faygo engineers read the PLC data and suggest correction before a small drift becomes a batch of scrap.
Disiplin pemeliharaan ini yang mengubah uji pabrik 72 jam menjadi tahun-tahun produksi yang stabil. Pembeli yang mengikutinya biasanya menjaga jalur beroperasi dengan kapasitas penggunaan yang tinggi dan menghindari dua kegagalan yang paling mahal: delaminasi antarmuka dan perubahan dimensi, keduanya dapat diperbaiki dengan koreksi awal tetapi mahal setelah gulungan penuh dibuat salah.
Pertanyaan yang Sering Diajukan
Apa perbedaan antara garis co-extrusion strip pelapis dan garis profil PVC biasa?
Sebuah garis profil PVC normal menggunakan satu ekstruder ganda untuk membuat profil bahan tunggal. Sebuah garis co-extrusion strip menambahkan satu ekstruder tunggal dan die co-extrusion sehingga lip lembut diikat pada dasar PVC rigid dalam satu langkah. Tabel kalibrasi, haul-off, dan cutter serupa, tetapi die dan ekstruder kedua adalah yang membuat lip lembut.
Can I run both PVC and TPE on the same line?
Ya. Ekstruder ganda plastisasi pembawa PVC yang kaku sementara ekstruder tunggal plastisasi bibir TPE atau PVC lunak. Mereka bertemu hanya di die co-extrusion, sehingga setiap bahan tetap berada di tabungnya sendiri pada suhu yang berbeda. Sistem resep menyimpan parameter set untuk setiap pasangan bahan.
Bahan bibir apa yang harus saya pilih untuk pintu luar?
For exterior and harsh-climate use, choose a TPV or TPE-S lip with a UV stabilizer package. Plasticized soft PVC is the lowest-cost option and works for interior or sheltered gaskets, but it hardens faster outdoors. The lip material decides weather life more than the base does.
Seberapa lebar strip yang dapat diproduksi jalur ini?
Platform Faygo mencakup lebar strip dari sekitar 6 mm hingga 50 mm, dengan sekat khusus yang didukung melalui desain die. Strip yang lebih lebar atau multi-kavitas menggunakan sekrup yang lebih besar dan meja kalibrasi yang lebih panjang. Batas yang tepat ditetapkan setelah Faygo memeriksa gambar sekat dan target meter per menit.
What output can I expect in meters per minute?
Kecepatan garis berkisar dari sekitar 1 m / menit pada garis kompak hingga 10 m / menit pada garis keluaran tinggi, dengan output bahan gabungan dari 40 kg / jam hingga 200 kg / jam. Batas yang sebenarnya adalah kapasitas pendinginan dan kekuatan lempengan lunak, bukan ukuran ekstruder. Die multi-kavitas meningkatkan output tanpa meningkatkan kecepatan garis.
Apakah jalur ini memenuhi standar China dan internasional?
Jalur Faygo terdaftar CE dan ISO, dan strip sampel dapat diverifikasi terhadap GB/T 12002 untuk strip pelapis arsitektur China dan metode uji cuaca ISO yang relevan untuk ekspor. Faygo mencatat hasil kekerasan, kompresi set, penuaan panas, dan ozon dengan setiap pengiriman.
What if I already have a PVC profile extruder?
Anda biasanya dapat menambahkan ekstruder tunggal, adapter co-extrusion, dan die baru ke tabel kalibrasi dan pengangkut Anda yang sudah ada, yang merupakan cara termurah untuk mulai membuat strip yang terpelapis. Faygo memeriksa tata letak Anda sebelumnya sebelum menyarankan tambahan versus jalur baru penuh.
How long does commissioning take and what training is included?
Commissioning time depends on strip complexity and utility readiness, but the 72-hour pre-delivery test already proves the line before it ships. On-site commissioning covers installation, recipe tuning, dimension verification, and operator training for daily running, die care, haul-off maintenance, and recipe changeover.
Talk to Faygo About Your Sealing Strip Line
If you are specifying a PVC door and window sealing strip co-extrusion line for architectural profile waterproof sealing, Faygo, pabrik Wanplas, can design the line from your strip cross-section and target output, build it on the CE and ISO certified FAYGOPLAST platform, and prove it with a 72-hour test before delivery. Share your cross-section drawing and required meters per minute, and the team will return a configuration with the right twin-screw and single-screw set, die cavity count, calibration length, and a documented process recipe. You are also welcome to visit the Zhangjiagang workshop to see a running line and discuss factory layout, training, and capacity expansion with the engineering team.
