Products
  • File Folder Making Machine
  • Bag Converting Machine
  • Bubble Mailer Machine
  • Extrusion Line
  • Non-Woven Converting Machine
  • Ultrasonic Welding Machine
Product Introduction
File Folder Making Machine

Ming Jilee offers a range of stationery file and folder making machines for the automated production of PP document storage and office organization products. Suitable products include sheet protectors, L-folders, business folders, button folders, clear books, zipper bags, book covers, and index dividers, as well as other PP stationery products. Different machine models and process configurations are available according to product size, material thickness, and production requirements. From dedicated machines to multifunctional production lines, Ming Jilee also provides automatic packaging solutions, covering production from file and folder making to final packaging.

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File Folder Making Machine
Product Introduction
Bag Converting Machine

Ming Jilee provides a range of PP and PE bag converting machines for the automated production of side-sealing and bottom-sealing bags. Suitable products include zipper bags, courier bags, side-sealing bags, fruit bags such as banana, grape, chicken bags, as well as flower bags and garbage bags. Depending on the bag type and application, the machines can integrate zipper, hot-melt adhesive, tamper-evident adhesive, release film, hole punching, and other optional functions. Machine configurations can be customized according to product size, material, and bag-making requirements to produce a wide variety of bag types and applications.

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Bag Converting Machine
Product Introduction
Bubble Mailer Machine

Ming Jilee provides automatic bubble mailer and envelope making machines for a variety of packaging materials. Suitable products include poly bubble mailers, zipper bubble bags, metallic bubble mailers, kraft bubble mailers, and paper envelopes. Among these, 100% paper envelopes made without PE plastic provide a more recyclable packaging alternative to conventional plastic-based mailers. The machines provide continuous production from roll material to finished envelopes, integrating feeding, folding, cutting, automatic adhesive application, sealing, tear-line perforation, and inkjet printing according to the product. Ming Jilee also provides bubble film rewinding and other downstream processing equipment for related packaging applications.

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Bubble Mailer Machine
Product Introduction
Extrusion Line

Ming Jilee provides a range of PP extrusion, blown film, and waste recycling machines for the production of PP sheets and films in different widths and thicknesses. These materials are widely used for stationery products, file folders, packaging materials, and other PP applications. PP sheets and films can be produced in transparent, colored, matte, or glossy finishes, with surface textures such as woven, orange-peel, and other embossed patterns. Ming Jilee also provides PP waste recycling machines to recycle production waste for reuse, helping reduce material waste and improve raw material utilization.

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Extrusion Line
Product Introduction
Non-Woven Converting Machine

Ming Jilee provides a range of fully automatic mask making and packaging machines for nonwoven masks, including standard flat masks, adult masks, children’s masks, and 3D masks. Equipment can be configured according to different mask styles, sizes, and material layers, with in-line packaging solutions available for continuous production from mask making to final packaging. The machines can integrate nonwoven feeding, nose wire insertion, folding, ultrasonic welding, cutting, and ear loop welding, completing automated production from roll material to finished masks and providing a complete solution for different mask production requirements.

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Non-Woven Converting Machine
Product Introduction
Ultrasonic Welding Machine

Ming Jilee provides ultrasonic welding equipment and automation solutions and is an authorized agent for Herrmann Ultrasonics from Germany. Combining German-designed ultrasonic technology with Ming Jilee’s automation integration experience, our solutions cover applications such as metal terminals, wire-to-wire splicing, and wire-to-terminal welding, as well as other wire and metal component joining processes. Ultrasonic technology is also used in AI server components, electronic products, medical consumables, and advanced packaging applications. In addition to standard welding equipment, Ming Jilee provides customized sonotrodes, fixtures, and automation integration, combining welding with feeding, positioning, and other processes for solutions ranging from standalone machines to fully automated production systems.

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Ultrasonic Welding Machine
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Sheet Protector Machine Series

What is a Sheet Protector Machine?

A sheet protector machine automatically punches holes along one edge of PP film and heat-seals the remaining three sides, forming a punched pocket — the clear A4 sleeve used worldwide in ring binders, filing systems, and school and office stationery. Sheet protectors are one of the most consumable items in the stationery retail channel, with stable global demand, which makes sheet protector machines an essential core production line for stationery manufacturers.

Sheet Protector Production Process and Workflow

The complete sheet protector manufacturing sequence covers the following stations: film unwind, edge trimming, hole punching (with a white reinforcement strip auto-loading system), bottom-seam heat sealing, and finished pocket output in counted batches. Three technical indicators define the performance of any sheet protector machine — production speed, hole pattern accuracy, and heat sealing consistency — and directly determine finished product quality and production economics.

Sheet Protector Machine Applications and Market

Sheet protector machines primarily serve stationery manufacturers, whose finished products flow into three main channels: schools, offices, and retail. Ring binders, clear book inner pages, music score pockets, and presentation folders all rely on sheet protectors as a base component, which places high demands on machine throughput and finished-product yield.

Ming Jilee MGA-17A-700SPH Single Line Sheet Protector Machine — Specifications and Features

The Ming Jilee MGA-17A-700SPH Single Line Sheet Protector Machine processes PP film at 0.035–0.1 mm single layer thickness, with an effective cutting width of 150–600 mm and cutting length of 90–550 mm, achieving 60–120 pcs/min. Three core design features:

  • White reinforcement strip auto-connecting system: Saves operator time when loading new ribbon rolls and keeps the line running continuously
  • Latest-design precision punching mold: Delivers high-speed production with a low breakdown rate and stable hole positioning accuracy
  • Stable heat sealing station: Produces clean, consistent bottom seams on every piece, maintaining a high finished-product yield rate

The MGA-17A-700SPH is CE certified and ISO-9002 quality certified, meeting international stationery manufacturers' procurement standards.

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