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Design Guide for PVC Slide Blister and Sleeve Packaging in toys and games: Draft, Radii and Draw Ratio

2026-10-02 Plastic News 0 views

Thermoforming rewards designs that respect how a heated sheet stretches. These rules prevent most tooling rework and most thickness complaints.

Everything here can be checked on a real sample before you commit to a production order.

Product Overview

This category covers a family of products rather than a single item. In practice a buyer defines slide blister and sleeve packaging by three things: the base resin, the format or dimension, and the performance or certification level it has to meet. Typical options in this category include gauge 0.30 to 0.55 mm; hanging hole options; sleeve and tray combinations. Materials most often specified are Polystyrene, Recycled PET, Polyvinyl Chloride, Polyethylene Terephthalate, and the choice between them changes stiffness, temperature resistance, chemical behaviour and price.

In the toys and games sector the decision is usually driven by child safety and presentation, with durability as a secondary requirement. Typical end uses include game inserts, collector windows, craft set packs.

Key Material Properties

The table below summarises the values that usually decide the material choice.

MaterialDensityTensile strengthService temperature
Polystyrene1.04-1.06 g/cm³30-50 MPa-20°C to 70°C
Recycled PET1.35-1.40 g/cm³45-65 MPa-40°C to 70°C
Polyvinyl Chloride1.38-1.45 g/cm³40-55 MPa-10°C to 60°C

Polyvinyl Chloride is frequently the default selection here: PVC can be formulated from rigid pipe compound to soft medical grade by changing plasticiser content.

Design Rules for Thermoformed Parts

Thermoforming rewards designs that respect how the sheet stretches. These rules prevent most tooling rework.

  • Keep the draw ratio moderate: deep cavities thin the sheet and force you to start with a thicker gauge.
  • Avoid undercuts unless the tool has moving sections, which adds cost to every cycle.
  • Leave a flat sealing flange of at least 6 mm when the pack has to be heat sealed or lidded.
  • Confirm the trim method early: steel rule die, CNC router or press tool each have different tolerances.
  • Use a draft angle of at least 3 degrees per side so the part releases without vacuum locks.
  • Design uniform wall thickness by avoiding abrupt depth changes in the same cavity.

Send these rules to your designer together with the sheet gauge and the target cycle time; most tooling modifications come from ignoring draft and corner radii.

Common Grades and Variants

  • Polystyrene based: rigid and glossy
  • Polyvinyl Chloride based: inherently flame retardant
  • Polyethylene Terephthalate based: excellent barrier to CO2 and moisture
  • Recycled PET based: lower carbon footprint than virgin resin

Beyond the base resin, most suppliers offer UV stabilised, food contact, flame retardant, anti-static and recycled content versions of the same product. Ask which additive package is included, because it is often the difference between a part that lasts three years and one that lasts ten.

Processing and Finishing Options

Processing method drives both cost and performance, so it should be fixed early in the design.

  • Die cutting
  • Assembly
  • Printing
  • Vacuum forming

Secondary operations such as printing, welding, machining and assembly are often cheaper to do in the same factory, and they reduce the risk of mismatch between components.

How to Specify Slide blister and sleeve packaging Correctly

Use this checklist when comparing two or three supplier quotations.

  1. avoid over-tight fits that split the sleeve
  2. check the fit tolerance between sleeve and blister
  3. test the pack after vibration and drop
  4. confirm the sleeve board grade and coating
  5. validate hanging strength for retail

Send this list to your supplier with the drawing and you will receive comparable quotations from every factory you contact.

Frequently Asked Questions

Can you produce slide blister and sleeve packaging in Polyvinyl Chloride?

Yes. {mat1} is one of our regular materials for this item, and we can supply virgin, modified and certified grades with full traceability. Material certificates and test reports are issued per batch.

What tolerance can be achieved?

Standard production tolerance follows the relevant ISO or DIN tolerance class for the process; tighter tolerances are possible after machining or grinding, but they add cost. Define the tolerance only on the functional dimensions.

Which certifications can you provide?

We can provide ISO 9001 quality system documentation, material certificates, RoHS and REACH statements, and where applicable food contact, flame retardancy or drinking water approvals. Tell us your target market and we will match the document set.

How do you control colour consistency?

Colour is controlled with a masterbatch reference approved by the customer, and every production lot is checked against the approved sample under standard lighting before shipment.

Do you offer samples?

Yes. Standard samples are normally free of charge and shipped within three working days; custom samples are charged at cost and credited against the first production order.

Conclusion

Our team supplies slide blister and sleeve packaging to toys and games customers worldwide, with samples, material certificates and full inspection reports available before mass production.

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