What are the machines used in the lasting of shoes ?

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What is the Lasting process and which types of Machines and Equipments  are used in the Lasting Section of the shoe making factory ?
asked Jan 8, 2019 by Pinto Benice

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A last is a mechanical form that has a shape similar to that of a human foot. It is used by shoemakers  in the manufacture and repair of shoes. Lasts typically come in pairs and have been made from various materials, including hardwoods, cast iron, and high-density plastics.

Lasting is the operation that stretches the shoe upper over the foot form or last. Almost all shoe are lasted in 

some way. With the last inside the upper the outsole can be bonded and pressed into place. Once the outsole is bonded the shoe can be De-lasted. There are several types of lasting operations. Slip lasting, board lasting, toe lasting, waist lasting, heel lasting, string lasting, California lasting and hand lasting.

The toe lasting machine is the center piece of the lasting equipment.  This machine takes hold of the upper and physically pulls it down around the last. The machine simultaneously pulls the upper into place while injecting hot glue to fix the uppers into place on the last.

Once the toe lasting is complete, the shoes’ waist and heel may also be pulled into place by hand operation or machine processes. Following the lasting operations, the lasted upper is placed into the first of the tunnels on the line. In this case, a cooling tunnel that shrinks the upper down to the last even tighter.

These machines can be divided into following types

SHOE LASTING MACHINERY -- Systems, Machines and Equipment for the shoe upper and Insole Assembly and stabilization.

01. INSOLE APPLYING MACHINES - The machine allows the insole fixing to the last by nail, hook, glue or sticky tape. It can be supplied with equipment to trim the insole.      

02 - INSOLE TRIMMING MACHINES - Machine with rotating blade and counter blade fr trimming the insole along the edge of the last. Continuous sharpening device.

03 - BACKPART MOULDING MACHINES - Defined "upper stiffener shaping" machine, it serves to pre-shape the material used for the reinforcement and to form a single entity of lining, stiffener and right upper side. The machine configuration can be in static or roundabout mode and are equipped with heated and cooled systems according to the needs.

04 -  - TOE UPPER FORMING MACHINES - Machine for shaping the toe upper; it consists of a heated station for the reactivation of the toe cup and of a station with aluminum last for shaping the toe of the upper. It makes the edge of the upper linear and ironed.

05 - UPPER EDGE ROUGHING MACHINES - Using roughing wheel, the machine removes the material in excess from the shoe upper (lining and toe cap); it levels them for facilitate the subsequent gluing operation during shoe lasting.

06 - MOCCASIN IRONING MACHINES - Machine equipped with aluminum last or series of lasts, on which is inserted the shoe upper of the sewn moccasin for the lastingly stabilized them in the shape position. The last may be heated or provided with holes for the steam. Configurations from the simple position to the rotary; supplied with beater hammers.

07 - MACHINES FOR HUMIDIFYING UPPER AND/OR ITS PARTS - Moistening chamber for the leather shoe uppers, involving both the external and the internal parts; lining and other part will be maintaining dry. This machine provide a fundamental contribution in softness to avoid breakage or modification of the leather during pulling over operations. Static or conveyor version.

08 - PULLING-OVER AND LASTING MACHINES - It provides the shoe upper lasting, particularly focused on the front part of the shoe up to the last waist. The glue is applied by fixed injectors or moving nozzle or their combined action. A series of adjustable clamps maintains a perfect pulling and positioning of the upper on the insole. The operating cycle operating is completed by two plates that fold down the upper edge to the glued insole.

09 - MACHINES TO FIX THE UPPERS TO THE LAST - Nailing for fastening the upper to the last in the line of junction of the rear part of upper closing stitching, in order to not damage or perforating the shoe upper. The nail is extracted after shoe lasting.

10 - WAIST LASTING MACHINES - This machine is designed for lasting the shoe sides with manual control operation. Versions with glue, nails and nails with thermoplastic.

11 - HEEL SEAT LASTING MACHINES - Machine finalized to lasting the insole and upper in the area of heel seat by nails and/or glue.

12 - SIDE AND HEEL SEAT LASTING MACHINES - Sequential lasting machine of the shoe sides and the heel seat of insole and upper. It performs this operation through clamps, moving pressure pads, injection glue nozzle and/or application of nails.

BackPart Moulding Machine       Toe Upper Forming Machine    Moccassin Forming Machine      Toe Lasting Machine     Heal Seat Lasting Machine 

Back Part Moulding   Toe Upper Forming   Moc Forming M/C    Toe Lasting M/C    Heal Seat Lasting M/C 

Toetech Footwear Machines Pvt Ltd.         


answered Jan 8, 2019 by Raj Toe Tech