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TOSS offers the plastic sealing industry a unique, cost effective, technique for superior heat sealing of many types of materials.
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 9 Steps to Heat
Sealing Perfection
A systematic approach for improving performance while obtaining superior results with stronger, more attractive heat seals.
Read the 9 Steps Online...
OR GET A FREE BOOKLET...
This 48 page color illustrated booklet is your key to perfecting your heat sealing process. Click here to order your personal copy.This booklet is offered as an aid to those that are charged with the challenge of producing good packaging and Perfect Seals... Every Time!
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• Properties of Selected Polymers
• Models of the ROPEX® Resistron® series "400"
• Expansion Chart
• NOREX Graph
• TOSS Alloy-20® Heatseal Band Size & Resistance Chart
• TOSS Alloy-20® Band Shapes & Characteristcis
• Resistance for Special Bands |
Properties of Selected Polymers
| Materials |
Melt Point, °C |
Specific Gravity |
Tensile Strength, P.S.I. |
Yield Strength, P.S.I. |
| Polytetrafluorethelene—PTFE |
327 |
2.14-2.20 |
3000-5000 |
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| Polyamide—Nylon 6 |
210-220 |
1.12-1.14 |
6000-24000 |
13000 |
| Polyamide—Nylon 66 |
255-265 |
1.13-1.15 |
11000 |
300 |
| Polyester—PET |
220-267 |
1.30-1.38 |
8200-8700 |
8200-8700 |
Polyethelene Copolymers— PE
Linear Low & Medium—LLDPE |
112-124 |
.918-.940 |
1900-4000 |
1400-2800 |
Polyethelene Copolymers— PE
Ethylene Vinyl Acetate—EVA |
103-110 |
.922-.943 |
2200-4000 |
1200-6000 |
| Polyethelene, High Density—HDPE |
125-135 |
.939-.960 |
2500-6500 |
2800-4800 |
| Polypropylene Copolymer—PP |
150-175 |
.890-.905 |
4000-5500 |
3000-4300 |
| Polyurethane |
75-137 |
1.12-1.24 |
45000-9000 |
7800-11000 |
Vinyl Polymers & Copolymers—PVC |
75-105 |
1.16-1.35 |
1500-3500 |
900-1700 |
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Models of the ROPEX® Resistron® series "400"
Download a pdf of this chart (644.3 KB) |
 Heat Seal Expansion Chart
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Download a pdf of the
Expansion Chart
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 NOREX Graph
Click image to view larger.
Download a pdf of the
Expansion Chart |
| TOSS Alloy-20® Heatseal Band Size & Resistance Chart |
SIZE-MM |
CROSS SECTION AREA |
MILLIOHMS PER METER |
OHMS PER INCH |
2 x 0.10 |
0.200 |
4400 |
0.112 |
2 x 0.12 |
0.240 |
3667 |
0.093 |
2 x 0.15 |
0.300 |
2933 |
0.075 |
2 x 0.20 |
0.400 |
2200 |
0.056 |
2 x 0.25 |
0.500 |
1760 |
0.045 |
2 x 0.30 |
0.600 |
1467 |
0.037 |
2 x 0.40 |
0.800 |
1100 |
0.028 |
2.5 x 0.15 |
0.375 |
2347 |
0.060 |
2.5 x 0.20 |
0.500 |
1760 |
0.045 |
2.5 x 0.25 |
0.625 |
1408 |
0.036 |
2.5 x 0.30 |
0.750 |
1173 |
0.030 |
2.5 x 0.40 |
1.000 |
880 |
0.022 |
2.5 x 0.50 |
1.250 |
704 |
0.018 |
3 x 0.10 |
0.300 |
2933 |
0.075 |
3 x 0.15 |
0.450 |
1956 |
0.050 |
3 x 0.20 |
0.600 |
1467 |
0.037 |
3 x 0.25 |
0.750 |
1173 |
0.030 |
3 x 0.30 |
0.900 |
978 |
0.025 |
3 x 0.40 |
1.200 |
733 |
0.019 |
3 x 0.50 |
1.500 |
587 |
0.015 |
4 x 0.10 |
0.400 |
2200 |
0.056 |
4 x 0.15 |
0.600 |
1467 |
0.037 |
4 x 0.20 |
0.800 |
1100 |
0.022 |
4 x 0.25 |
1.000 |
850 |
0.022 |
4 x 0.30 |
1.200 |
733 |
0.019 |
4 x 0.40 |
1.600 |
550 |
0.014 |
4 x 0.50 |
2.000 |
440 |
0.011 |
5 x 0.10 |
0.500 |
1760 |
0.045 |
5 x 0.15 |
0.750 |
1173 |
0.030 |
5 x 0.20 |
1.000 |
880 |
0.022 |
5 x 0.25 |
1.250 |
704 |
0018 |
5 x 0.30 |
1.500 |
587 |
0.015 |
5 x 0.40 |
2.000 |
440 |
0.011 |
5 x 0.50 |
2.500 |
352 |
0.009 |
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| SIZE-MM |
CROSS SECTION AREA |
MILLIOHMS PER METER |
OHMS PER INCH |
| 6 x 0.10 |
0.600 |
1467 |
0.037 |
| 6 x 0.15 |
0.900 |
978 |
0.025 |
| 6 x 0.20 |
1.200 |
733 |
0.019 |
| 6 x 0.25 |
1.500 |
587 |
0.015 |
| 6 x 0.30 |
1.800 |
489 |
0.012 |
| 6 x 0.40 |
2.400 |
367 |
0.009 |
| 6 x 0.50 |
3.000 |
293 |
0.007 |
| 8 x 0.10 |
0.800 |
1100 |
0.028 |
| 8 x 0.15 |
1.200 |
733 |
0.019 |
8 x 0.20 |
1.600 |
550 |
0.014 |
| 8 x 0.25 |
2.000 |
440 |
0.011 |
| 8 x 0.30 |
2.400 |
367 |
0.009 |
| 8 x 0.40 |
3.200 |
275 |
0.007 |
| 8 x 0.50 |
4.000 |
220 |
0.006 |
| 10 x 0.10 |
1.000 |
880 |
0.022 |
| 10 x 0.15 |
1.500 |
587 |
0.015 |
| 10 x 0.20 |
2.000 |
440 |
0.011 |
| 10 x 0.25 |
2.500 |
352 |
0.009 |
| 10 x 0.30 |
3.000 |
293 |
0.007 |
| 10 x 0.40 |
4.000 |
220 |
0.006 |
| 10 x 0.50 |
5.000 |
176 |
0.004 |
| 12 x 0.15 |
1.800 |
489 |
0.012 |
| 12 x 0.20 |
2.400 |
367 |
0.009 |
| 12 x 0.25 |
3.000 |
293 |
0.007 |
| 15 x 0.15 |
2.250 |
391 |
0.010 |
| 15 x 0.20 |
3.000 |
293 |
0.007 |
| 15 x 0.25 |
3.750 |
235 |
0.006 |
| 20 x 0.15 |
3.000 |
293 |
0.007 |
| 20 x 0.20 |
4.000 |
220 |
0.006 |
| 20 x 0.25 |
5.000 |
176 |
0.004 |
| 25 x 0.15 |
3.750 |
235 |
0.006 |
| 25 x 0.20 |
5.000 |
176 |
0.004 |
| 25 x 0.25 |
6.250 |
141 |
0.004 |
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| Download a pdf of this chart (21.4 KB) |
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ROPEX® and Resistron® are Registered Trademarks of ROPEX Industrie-Elektronik GmbH, Germany • TOSS® and TOSS Alloy-20® are Registered Trademarks of TOSS Machine Components, Inc., USA • Teflon® is a Registered Trademark of Dupont, USA©2011 TOSS Machine Components, Inc.
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