Stone paper that rocks!

Food trays

foodtrays_499_339_100

Rocktherm Lo Res Logo

A Thermoforming range of boards for the food industry

Suitable for the freezer or chiller and hot food.

A 4 micron layer of PE both sides of the calcium carbonate RPD enables a safer surface for food with

no reaction to acidic foods.

Thermoform  Corrugated

STN Packaging insert above

2 compartment Rocktherm STN600 tray2 compartment traylores

above: STN600 tray

[STN / SFN] INFORMATION SHEETLast Updated: 07-07-2010

 

A. TYPES OF STN & ITS APPLICATIONS

STN (1.6)

 

THICKNESS (m)

DENSITY

GSM

M2 / TON

APPLICATIONS (THERMOFORMING/PRINTING)

400

1.6

640

1563

Soap Tray, Mobile Phone Tray, Chocolate Liner

500

1.6

800

1250

Lunch Box, Fruit Box, Yogurt Wrapping Box, Tags

600

1.6

960

1042

Yogurt Tubs, Cookie container

700

1.6

1120

893

Ice-cream Tubs, Fish Mat, Meat Mat

N.B:

  • Surface of STN (1.6) is flat.
  • We have not come across any converter who has had any problems  forming STN (1.6).
  • Thickness Variation Average ±10micro

SFN (1.4)

 

THICKNESS (m)

DENSITY

GSM

M2 / TON

APPLICATIONS (THERMOFORMING ONLY)

400

1.4

560

1786

Soap Tray, Mobile Phone Tray, Chocolate Liner,

500

1.4

700

1429

Lunch Box, Fruit Box, Yogurt Wrapping Box

600

1.4

840

1190

Yogurt Tubs, Cookie container,

700

1.4

980

1020

Ice-cream Tubs, Fish Mat, Meat Mat

N.B:

  • Surface of STN (1.4) is not fully flat, instead has a special texture feel.
  • Most converters should be able to thermoform with this grade.
  • More care seems to be required for thermoforming the STN (1.4) as compared to STN (1.6).
  • Thickness Variation Average ±10%.

B. TEST REPORTS:

1. RoHS

2. FDA

3. FOOD APPLICATION (underway)

C. TIPS

1. It is okay to keep heated food in the containers, though we do not recommend using this material

in microwaves or ovens. In contrast, you will find using our STN in cold and wet environments is extremely suitable!

D. ROLL WIDTH / LENGTH

WIDTH: 1100mm (still in progress to check if wider widths can be provided)

LENGTH:

THICKNESS (MICRON)

LENGTH (METER)

400

1500

500

1200

600

1000

700

900

 

E. SURFACE TREATMENT

  • STC/STO: The surface of STN is PE lamination. Thus should one require printing on this (rotary) then corona treatment needs to be done. Printing on the 1.6 density series is more recommended over the 1.4density as the 1.6 density has a flatter surface.
  • STN: On the contrary, should heat sealing be required then corona treatment should not be done.

N.B. Where there is to be heat seal, corona surface treatment is not recommended.

reel stock, sheets or Finished product ( trays and moulded containers, clamshells , egg cartons etc.) can be purchased from the Stone Paper Company to your own design or from a wide range of standing shapes and sizes.

_MG_2482.JPG _MG_2484.JPG _MG_2483.JPG _MG_2491.JPG _MG_2494.JPG _MG_2485.JPG _MG_2503.JPG

Apart from supplying the material we can also provide finished product from

a wide range of moulds and dies available.

rockstocklores edited

Printablke Chip trays (die cut and glued) made from Rockstock RPD  are available from the stone paper Company. sizes made to order  (quantity 10,000 upwards) POA.

Chip Trays.jpg0001

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