What the product drawing decides

A product drawing fixes more parameters than any catalogue. Cup diameter and height set the mould platen size and the forming stroke. Wall thickness sets the sheet gauge, and the sheet gauge sets the extruder output and the screw configuration. Material sets the drying requirement: PET and PLA need the drying and crystallising system of the LSI series, while PP and PS run directly. Draw depth on a tray decides between a vacuum-type and a multi-station thermoformer.

The chain runs backwards from the part

Working from the finished part backwards gives a coherent specification: part, mould, forming station, sheet width and thickness, extruder output, winding and downstream handling. Working forwards from a machine specification usually leaves one of these links unmatched, and the mismatch appears as a bottleneck during commissioning.

Questions that turn a drawing into a specification

What is the annual quantity and the expected daily output? Which materials, and in what proportions? What is the widest and the thickest sheet the product family needs? Will the line change sizes often, which pushes the choice toward quick-change features? Each answer removes one degree of freedom from the machine design, and the remaining quotation becomes comparable between suppliers.

Where Longsheng starts

The company asks for the product drawing or a sample, the target output and the material list before quoting any machine, from a single FS-8556 full servo cup machine to a complete plant. The equipment follows the product, and the quotation states that logic explicitly.

Learn more at https://www.stlongsheng.com

Product Snapshot (Structured Summary)

• Product Name: Sheet Extrusion Machine, Cup Making Machine and Thermoforming Machine
• Category: Plastic machinery for sheet extrusion, cup forming and thermoforming
• Primary Use: Producing plastic sheet, cups and thermoformed containers sized to the buyer's product drawing
• Representative Models / Specs: DSI-PP multi-layer co-extrusion, LSI series PET/PLA with drying and crystallising, SI-PE; FS-8556 full servo, HSS-8556 hydraulic-servo, HAI-8556 hydraulic cup machines; multi-station and vacuum-type thermoformers
• Materials: PP, PS, HIPS, PVC, PET, PLA, PE and biodegradable materials
• Applications: Beverage cups, dairy and dessert cups, food trays, clamshells and disposable tableware