Casing Machinery

Table of Contents

Chapter 1: Uncasing and Unscrambling

Topics: Manual uncasing; Low-volume uncasing and unscrambling; Unscrambling with conveyors; Automatic uncasing; Conveyor chain and care

Learning Objectives:

• List the steps that must occur before an empty container can be processed.
• Tell which types of conveyors are typically used for unscrambling.
• Explain how the pickup head of an automatic uncaser grips different container shapes.
• List important steps in the periodic care and maintenance of roller chain.

Chapter 2: Cleaning and Washing

Topics: Air cleaning; Manual washing with water; Bottle washer/rinser; Metal washers; Container warming; Pasteurization; Maintenance

Learning Objectives:

• Name the two methods by which containers are usually cleaned.
• Describe the automatic air cleaning operation.
• Describe the operation of an automatic bottle washer and rinser.
• Describe the operation of a high-production bottle washer.
• Explain why pasteurization is important.

Chapter 3: Gathering Machines

Topics: Multi-packing machines; Skip-carton detector; Continuous-run accumulator; Stacking sequence; Cycling operations; Case packing, bundling machines; Maintenance

Learning Objectives:

• Name the three types of gathering machines currently in use.
• Describe the operation of a bundling machine.
• Describe the infeed supply operation and cycle of a multipacker.
• Name the two functions of a typical case packer.
• Explain your most important responsibility in gathering machine maintenance.

Chapter 4: Cartoning Machines

Topics: Carton making; Types of cartons and machines; Glue-end cartons; Carton feeding; Product infeed; Machine attachments; Closing and gluing

Learning Objectives:

• Define the following terms: reverse tuck, arthur lock, and crash fold.
• Explain why butt flaps are rarely used.
• Describe the operation of cartoning machines and related carton feeding methods.
• Explain how cartons are typically closed and glued.
• List steps involved in cartoning machine maintenance.

Chapter 5: Casing Machines

Topics: Horizontal and vertical machines; Top, side, and bottom filling machines; Case taping machines; Heatshrink sealing; Maintenance

Learning Objectives:

• Tell how the manner in which cases are filled is determined.
• Explain the function of a compression unit.
• Contrast top filling and side filling machines.
• Explain the purpose and operation of electrical interlocks in an automatic casing machine.
• Identify the source of heat control problems in a shrink film machine.

Chapter 6: Wrapping Machines

Topics: Wrapping materials; Settings and controls; Paper feed; Paper corrugating wires, rollers, cutoff change gears, knife, feed belt, stops, and guides

Learning Objectives:

• Explain the function of registration dots on the continuous roll paper used on wrapping machines.
• Explain the functions of the paper corrugating wires in a wrapping machine.
• Trace the operation of a typical wrapping machine, including timing elements.
• Tell how to clear a jam in a wrapping machine.
• Describe various kinds of glue used in wrapping machines and their application.

Chapter 7: Strapping and Stitching

Topics: Strapping materials; Tensioners; Sealers; Combination tools; Strapping systems; Stitching machines; Stitch defects; Adjustments

Learning Objectives:

• Explain why a tensioner and sealer are sometimes combined into a single assembly.
• Describe the maintenance required by strapping heads.
• Explain the operation of a stitching machine.
• List common stitching machine problems and stitch defects and tell their probably causes.

Chapter 8: Adhesives and their Application

Topics: Properties and types of adhesives; Hot melts; Application systems; Troubleshooting, maintaining, and cleaning equipment

Learning Objectives:

• Define the terms penetration, tackiness, and viscosity as they relate to adhesives.
• Name the most likely source of trouble in hot melt application machinery
• List steps involved in servicing a hot melt dispensing head.
• Explain common maintenance items related to application equipment.
• Describe the storing and handling requirements for liquid adhesives.

Chapter 9: Labeling and Coding

Topics: Label forms; Continuous roll, indirect label feeding; Pressure-sensitive labeling, heads; Coding attachments; Flexographic imprinting

Learning Objectives:

• Name common problems in labeling operations and give their solutions.
• Describe the process of continuous roll feeding.
• Explain the periodic maintenance required of labeling heads.
• Explain the operation of a friction-driven coder and a flexographic imprinter.

Chapter 10: Maintenance and Safety

Topics: Planned maintenance; Spare parts; Lube schedules; Mechanical and electrical maintenance; Fluid components maintenance; Guards

Learning Objectives:

• Identify the key to good planned maintenance.
• Name the two most important factors in drive belt wear on a packaging machine.
• List items to consider when replacing a motor?
• Explain the purpose of recommended color codes for plant equipment.
• Name the leading causes of industrial injuries.

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