Digital Textile Printing Machine List and Description

Printing Machine

There are different types of digital textile printing machine and garment printing machine is manufactured by the companies. Example of some machines are – Block Printing Machine, Roller Printing Machine, Screen Printing Machine, Flat-Screen Printing Machine,         Rotary Printing Machine, Transfer Printing Machine, Stencil Printing Machine, Digital Printing Machine, Batik Printing Machine etc.

Types of Printing Machine

• Block Textile Printing Machine
• Roller Printing Machine
• Multicolor Screen Print Machine
• Screen Textile Printing Machine
• Flat-Screen Textile Printing Machine
• Rotary Screen Printing Machine
• Transfer Printing Machine
• Stencil Printing Machine
• Digital Textile Printing Machine
• Batik Printing Machine

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SOP Of Textile Printing Machine :

Marking is done on printing machine bed for correct and accurate placement. Cut parts are placed on the m/c bed and screen is placed on top of cut parts.Prepared emulsion in form of paste is poured over the screen and is squeezed with help of roller or squeegee. Emulsion passes through screen and is fixed on the cut parts thus printing is done on cut parts.

Hand Curing : After printing when cut parts are removed from machine Manual hand curing is done      with the help of a dryer. This is done to dry the print so that it does not spread out.

Machine Curing: Temperature and run time of curing machine is adjusted according to nature of fabric Then cut parts are placed on the conveyer belt of curing machine and is passed through thus the print is completely dried up and printing is over.

Pilot Run and Bulk Production: After Order confirmation Bulk Production starts on planned date. Work stations are defined samples and mock-ups are kept for reference. Hourly Targets are given by IE dept at the time of Bulk Production. Same printing recipe is used which was developed at sampling stage.

The first 50 pcs are the pilot run samples which after sewing are sent for washing and after wash garments are reviewed. If after wash print quality is not ok then modification is done in recipe and recipe is finalized accordingly and we proceed with bulk production.

Quality Assurance: Approved Mock-ups are visually displayed in printing dept for reference. Marking is done on digital textile printing machine for correct print placement.Operators are being trained by supervisors and technicians. Operators have also been trained for self checking the pcs to ensure 100% quality. Recipe is written into local language Bangla which is best understood by the Supervisors and Operators.

Supplies Responsibilities:

Color: If colors are chosen from suppliers color palate, no lab dips are required. If colors are chosen from pantone, scotdic or another source, lab dips are submitted to customer following color approval procedure.

Testing: The Supplier must test blanks of all styles and all colors, following customer performance testing requirements. Note: If the same color/same style was used in a previous season , the supplier must have the color/ same style was used in a previous season, the supplier must have the style/ color retested. An exception would be an ongoing, uninterrupted program. In case, only new colors must be submitted for approval. Testing of all blanks is required on a yearly basis, following standard testing procedure.Bulk fabric should be sewn into approved style in supplier sample room and submitted for testing, prior to shipping to sewing factory.Submit to intertek testing under protocol 12- Garment testing, following the minimum sample requirements for the garment testing and additional color testing.

QA Audits : Perform the CWIQ evaluation on all colors. Conduct a Final cutting QC on all styles/shipments. This is including the measurement portion of the audit, following supplier spec sheet.

Vendor responsibilities : Conduct pre-production meeting to review the approved sample requirements, screen placement and any other customer requirement. Confirm all the colors match approved bilk sample garment, following customers colour approval procedure. Confirm main label and care label are correct as ordered.

During production :  In-line inspection of all the operations being performed. Opportunity to identify any machinery, operator, construction, workmanship or measurement issues and immediately correct. PTL sample is pulled and sent to Technical designer.

CWIQ Evaluation: Perform CWIQ evaluation on all colors and all screen prints. This should be completed during 1^st print run per color.

Final Random Inspection: Conduct final random inspection(FRI), including both measurement and workmanship audit. The measurement portion of the audit is required, due to heat being applied during the printing process. Supplier spec should be followed for this audit.Sampling plan to be used for both the workmanship and measurement audit is based upon single sampling/S-4/Reduced, per color and for all purchase orders, regardless of size. 13 piece sample size, reject at 4.

Customer responsibilities:    Customer will verify all the styles have a passed intertek test report by season , noting the exception indicated above.Customer may select styles/purchase orders to be inspected our 3^rd party. Factory inspection  procedure.

Advantages of Block Textile Printing Machine Works

• Simple method of printing
• No expensive equipment required
• No limitation in repeat of size of style
• Prints produced have great decorative value and stamp of craftsmanship

Disadvantages of Block Textile Printing Machine Works

• Involves much manual work
• Method is slow and therefore low output
• Good skilled labors needed for multi color design
• Fine and delicate designs hard to produce

Advantages of Roller Printing Machine Works

• Large quantities of fabric at the rate of 914-3658m per hour can be printed.
• Faulty joints or joint marks are absent.
• Fine sharp outlines and good prints can be obtained which is difficult to get in block printing.

Disadvantages of Roller Printing Machine Works

• Not economical for short run of fabrics.
• Difficult to produce blotch designs.
• Repeat of design limited to the size of the rollers.
• Setup cost of roller printing m/c is high

Advantages of Stencil Printing Machine Works

• Simple and cost effective.
• Stencils can be made rapidly and can be used for small orders.
• Color combination is good in it.

Disadvantages of Stencil Printing Machine Works

• Good design is difficult to obtain.
• Process is laborious.
• Not suitable for large scale production.

Engr. Kh. Mashiur Rahman, Garments Auto Machine Technologist, Web: www.autogarment.com, Email: sales@autogarment.com, Cell: +88 017 92 52 53 54