SONDERHOFF FERMAPOR DD980

The sealing for metal barrel and packaging lids

SONDEHROFF FERMAPOR DD980 is the brand name for single-component PVC plastisol by Sonderhoff Chemicals for the production of heat-curing, soft-elastic foam seals.

Sonderhoff formulates SONDERHOFF FERMAPOR DD980 for different packaging requirements. The properties desired by the customers are implemented in tailor-made product formulations.

The application process

SONDERHOFF FERMAPOR DD980 systems are processed using single-component dispensing systems usually available on the market. The fluid PVC plastisol is applied into the groove of metal lids for drums or buckets as well as for sealing metal jagged lids through the dosing nozzle of a single-component dispensing system. After a short heat-curing in a specially designed continuous furnace, the plastisol foams up and thickens.

The duration spent in the furnace is usually about 2 to 15 minutes. The oven temperatures range from +170 to +240 °C. The result is a seamless, closed-cell PVC soft foam seal on the metal lid, which can already be installed after a short cooling period.

 

The foaming process

Material application:

SONDERHOFF FERMAPOR DD980 PVC plastisol is applied into the lid groove through the dosing nozzle of a single-component dispensing system.

Foaming time in the curing furnace:

SONDERHOFF FERMAPOR DD980 PVC plastisol foams and sets into a thermoplastic at temperatures from 170 to 240°C. The duration in the furnace ranges from approx. 2 to 15 minutes, depending on the temperature.

Assembly:

After cooling of the SONDERHOFF FERMAPOR DD980 soft foam seal, applied in the lid groove, can be used immediately after cooling.

Broad range of properties

SONDERHOFF FERMAPOR DD980 systems possess a high resistance to many chemicals such as solvents, coolants and cleaning materials, alcohols, hydrochloric and nitric acid, and ammonia gas. In addition, they are characterized by minimal water absorption of  <1% in an uncompressed condition.

Suitable for the sealing of food packaging

Our phthalate-free SONDERHOFF FERMAPOR DD980 PVC plastisol is approved for food packaging by EU regulation No. 10/2011. It also meets the requirements of the German LFGB (according to §§ 30 and 31 part 1 of the food and fodder laws), judged by the guidelines laid down by the EFSA (European Food Safety Authority). It can be used in direct contact with liquid, acidic, fat-containing and dry foodstuffs.

PHYSICAL AND CHEMICAL PROPERTIES
Property SONDERHOFF FERMAPOR DD980
Appearance Beige, white, red or grey-green
Hardness From 12-55 Shore A to 50-90 Shore 00
Viscosity From 800 mPa·s to 7,500 mPa·s
Density From 0.35 to 0.90 g/cm³
Tensile strength From 800 to 900 kPa [N/cm²]
Elongation at break Approx. 150%
Temperature resistance From -10° C to +60° C
Water absorption Up to < 1 % 
Other properties Good resistance to many chemicals and solvents, usable immediately after cooling

THE SONDERHOFF FERMAPOR DD980 RANGE

The SONDERHOFF FERMAPOR DD980 range provides effective seal protection for a wide variety of applications and requirements. In the table you will find a selection of PVC foam sealing systems for various applications in the packaging industry.

SONDERHOFF FERMAPOR DD980 Colour Viscosity
mPas
Hardness
Shore A
Density
g/cm3
Further properties  
6448-A-R Red 2,500 - 5,500 53-68 13 - 21 0,38 - 0,48 Very good adhesion to various metal sheet qualities and
paints; optimized resistance to various solvents
6646-A-R Red 2,000 - 5,000 57-67 16 - 24 0,40 - 0,50 Very good adhesion to various metal sheet qualities and
paints; cost-effective
6051 White 2,500 - 4,000 55-65 15 - 20 0,40 - 0,50 Optimized resistance to various solvents
VP-0407-FA White 800 - 1,700 75 - 85 30 - 40 0,55 - 0,63 Phthalate-free; suitable for food packaging acc. to
EU regulation No. 10/2011
6646-A Grey-green 2,500 - 5,000 52 - 67 17 - 24 0,40 - 0,50 Very good adhesion to various metal sheet qualities and paints
7165 Beige 1,800 - 3,800 58 - 73 25 - 35 0,55 - 0,61 Cost-effective
6665 Yellow-beige 2,500 - 3,700 60 - 70 20 - 30 0,54 - 0,60 Good adhesion; optimized resistance to various solvents
6545 Beige 1,500 - 3,500 60 - 70 15 - 25 0,36 - 0,51 Cost-effective
5145 Weiß 1,800 - 2,500 45 - 60 10 . 15 0,80 - 0,86 Low density; optimized resistance to various solvents
8597 Beige 2,500 - 4,000 80 - 90 45 - 55 0,80 - 0,86 High density; optimized resistance to various solvents

Good reasons for SONDERHOFF FERMAPOR DD980

 

  • … offers exceptional protection by sealing metal packaging lids against leakage or contamination
    of packaged goods, even in the event of falls, impacts or vibrations.
  • … meets the UN-approved tightness requirements for the transport of hazardous goods
    (dependingon a suitable container design for it).
  • … is phthalate-free for food packaging in accordance with EU regulation No. 10/2011 and the German
    LFGB (acc. to §§ 30 and 31 part 1 of the food and fodder laws), judged by the guidelines of the EFSA
    (European Food Safety Authority).
  • … has a very good resistance to many chemicals, such as solvents, coolants and cleaning agents,
    alcohols, hydrochloric and nitric acid, and ammonia gases.
  • … has a very low water absorption of  <1%.
  • … displays excellent adhesion to inner-lacquered drum lids and jagged lids made of tinplate,
    black plate and steel.
  • … is adjustable to different hardness grades.
  • … is characterized by savings of material, weight and cost, due to its very low density.