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उत्पाद वर्णन:

What do Rewinder Bottom Knives Mean?

“Rewinder Bottom Knives” are critical components in rewinding machines, which are used to unwind large rolls of material (such as paper, film, foil, textiles, or adhesive tapes), slit them into narrower widths, and then rewind these narrower strips into smaller, more manageable rolls. The Rewinder Bottom Knife typically works in conjunction with a top knife (or circular blade) to perform the slitting operation. The material being processed passes between the rotating top knife and the stationary Rewinder Bottom Knife, creating a clean and precise cut. These bottom knives often feature a flat or grooved surface to support the material and ensure consistent slitting. The design and material of the Rewinder Bottom Knife are crucial for achieving accurate slitting widths, clean-cut edges, and efficient rewinding processes. They are also sometimes referred to as “bottom slitter knives,” “slitting anvils,” “bed knives for rewinders,” “lower slitter blades,” or “multi-groove knife blocks” (if they have multiple grooves for different slitting widths).

Uses and Applications of Rewinder Bottom Knives

Rewinder Bottom Knives are essential in a wide array of industries that involve the converting of web-based materials:

• कागज उद्योग: Slitting large rolls of paper into narrower rolls for various applications like printing, packaging, or tissue manufacturing (e.g., toilet paper, paper towels).
• Film and Foil Converting: Slitting plastic films (e.g., packaging films, BOPP, PET), aluminum foil (e.g., for food packaging or insulation), and other flexible films into specific widths.
• Adhesive Tape Manufacturing: Slitting wide rolls of adhesive tapes (e.g., packaging tape, masking tape) into consumer or industrial-sized rolls.
• कपड़ा उद्योग: Slitting rolls of fabric or non-woven materials into narrower widths for garment manufacturing, industrial textiles, or other textile applications.
• Label and Tag Manufacturing: Slitting wide webs of label stock or tag material into individual rolls or multiple lanes for further processing.
• पैकेजिंग उद्योग: Creating specific widths of packaging materials for automated packaging lines.
• Carpet and Flooring Industry: Slitting wide rolls of carpet or flooring materials into narrower rolls for retail or installation.

The specific design and material of the Rewinder Bottom Knife are chosen based on the type of material being slit, the required slitting speed, the desired edge quality, and the overall demands of the rewinding operation.

Common Materials for Rewinder Bottom Knives

The materials used to manufacture Rewinder Bottom Knives are selected for their hardness, wear resistance to withstand continuous contact with the top knife and the moving web material, and their ability to maintain a precise cutting edge. Common materials include:

• Tool Steels (e.g., D2, M2, A2, O1, SKD-11): Offer a good balance of hardness, toughness, and wear resistance, suitable for a wide range of materials and production volumes.
• High Carbon Steel (e.g., 52100, 1095): Provides high hardness and the ability to take a sharp edge, suitable for some paper and film applications. May require coatings for enhanced wear resistance.
• High-Speed Steel (HSS) (e.g., M2, M4, SKH-51): Offers excellent hardness and wear resistance, especially at higher operating temperatures, making it suitable for demanding applications.
• Alloy Steels (e.g., 9CrSi, Cr12MoV): Provide good wear resistance and toughness, often used for slitting various paper and plastic materials.
• टंगस्टन कार्बाइड: Offers exceptional hardness and wear resistance, ideal for high-speed slitting of abrasive materials and for extended blade life, reducing downtime. Often used as inlaid edges or solid carbide knives.
• सिरेमिक सामग्री: In some specialized applications, ceramic knives offer very high precision and are particularly suitable for thin films and foils due to their sharp cutting edges and wear resistance.

Coatings are often applied to Rewinder Bottom Knives to further enhance their performance and lifespan. Common coatings include:

• Hard Chrome Plating: Increases surface hardness and corrosion resistance.
• Titanium Nitride (TiN): Improves surface hardness and reduces friction.
• Chromium Nitride (CrN): Offers excellent wear and corrosion resistance.
• हीरा-जैसा कार्बन (डीएलसी): Provides very low friction and high hardness, beneficial for preventing material buildup and ensuring clean cuts.

The selection of the blade material and coating depends on the specific materials being slit, the production speed, and the desired blade lifespan and cut quality.

Common Shapes of Rewinder Bottom Knives

Rewinder Bottom Knives come in various shapes and configurations to match the specific requirements of the rewinding machine and the slitting method used:

• Flat Bottom Knives: Simple flat bars with a precision-ground top surface that acts as the anvil for the top knife to cut against.
• Grooved Bottom Knives (Multi-Groove Knife Blocks): Feature multiple parallel grooves along their length, allowing for different slitting widths to be achieved by positioning the top knives in the desired grooves.
• Step Bottom Knives: Have different height levels along their length to accommodate different material thicknesses or slitting configurations.
• Radius Edge Bottom Knives: Feature a rounded or radiused top edge, often used for score slitting or crush cutting methods.
• Serrated Bottom Knives: Have a toothed or serrated top edge for specific cutting applications, particularly with fibrous materials.
• Inlaid Bottom Knives: Consist of a base material (e.g., tool steel) with a harder cutting edge material (e.g., tungsten carbide or HSS) inlaid or bonded to the top surface for increased wear resistance.

The mounting mechanism of the Rewinder Bottom Knife is also crucial, ensuring secure and precise positioning within the rewinding machine. This can involve bolt holes, keyways, or other specialized mounting features. The overall dimensions (length, width, thickness) are determined by the machine design and the width of the material being processed.

अगर आपको वह ब्लेड नहीं मिलता जिसकी आपको तलाश है, तो हम उसे कस्टमाइज़ भी कर सकते हैं। हमारा देखें “कस्टम ब्लेड” जानने के लिए! आपका स्वागत है पूछताछ!

ब्रोशर खोलें

Metal क्यों चुनें?

1. एक-स्टॉप परेशानी मुक्त आयात सेवा

आयात की सुविधा का आनंद लेना आसान है, परिवहन से लेकर सीमा शुल्क निकासी तक, हम पूरी प्रक्रिया को संभालते हैं, आपको बस वैट का भुगतान करना होगा और कंपनी में माल आने का इंतजार करना होगा।

2. प्रतिस्पर्धी मूल्य निर्धारण

हमने इसके ब्लेडों को अनगिनत अनुप्रयोगों में उपयोग होते देखा है और आप हमारे सामने जो भी प्रोजेक्ट आए, उसे संभालने के लिए यह तैयार है - सटीकता, स्थायित्व और बेजोड़ प्रतिस्पर्धी मूल्य प्रदान करता है।

3. ओडीएम और OEM उपलब्ध

चाहे आप चित्र, रेखाचित्र या नमूने प्रदान करें, हम आपके लिए चित्र बनाने और निर्माण करने में सक्षम हैं। हमारे पास लगभग किसी भी औद्योगिक टूलींग एप्लिकेशन को बेहतर बनाने के लिए मौजूदा डिज़ाइन और विनिर्देशों को संशोधित करने में सहायता करने की क्षमता भी है। अपनी विशिष्ट आवश्यकताओं पर चर्चा करने के लिए कृपया हमारी समर्पित बिक्री टीम से संपर्क करें।

4. गुणवत्ता नियंत्रण

गुणवत्ता नियंत्रण के लिए परीक्षण और निरीक्षण की एक श्रृंखला की जाती है, जिसमें प्रथम वस्तु निरीक्षण, आने वाली सामग्री का निरीक्षण, और प्रमाणित सामग्री, प्रक्रियागत गुणवत्ता निरीक्षण, अंतिम गुणवत्ता निरीक्षण शामिल हैं।

5. लचीली खरीद, असीमित सहयोग

चाहे आप आयातक, वितरक, थोक विक्रेता या अंतिम उपयोगकर्ता हों, हम न्यूनतम MOQ, पूछताछ के लिए कोई परेशानी नहीं और खरीद के लिए अधिक स्वतंत्रता के साथ आपका स्वागत करते हैं।

6. विदेशी मॉनिटर, उत्पादन प्रगति की वास्तविक समय रिपोर्ट

अपने अनन्य मॉनिटर बनें, उत्पादन लाइन में हर महत्वपूर्ण नोड का नियमित संचरण, चाहे कितनी भी दूर हो, उत्पाद की प्रगति को यथासंभव समझने के लिए!

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