PVC dip coating
Have metal parts coated with PVC - exactly according to your priorities
PVC coating of metal parts for commercial use
As a commercial customer, you would like to provide your metal parts or glass products with a PVC dip coating or Plastic parts can be encased in PVC. Coating with PVC using the dipping process is a processing option, especially in this case, when ordinary PVC round caps or PVC rectangular caps resp. Straight edge caps cannot be securely mounted due to the contours of your products.
If the coated parts are expected to be subjected to increased mechanical stress during use, we will treat the parts with an adhesion promoter (primer) before coating. Although this is a little more time-consuming in terms of preparing the parts to be coated, it has the advantage that the coating can only be removed from the metal part by thermal or mechanical overloading.
However, plastic parts can also be coated with PVC if the plastics used are higher temperature-resistant plastic types such as PEEK. An important basic requirement for coating plastic parts with PVC is that the plastic part to be coated can withstand a temperature of approx. 220°C for several minutes without changing its shape, appearance or mechanical properties.
Keyword e-mobility: PVC insulation for current-carrying connecting elements
The Krevosol types from KREMER enable good insulation of the connection points with live connecting elements suitable.
ISolvent-based PVC has a high dielectric strength of 15-20 kV/mm, making it ideal for use in coatings. However, it should be noted that PVC cannot be used permanently above 70 degrees. The layer thicknesses that can be realised must also be taken into account when using the dipping process.
There are many examples of applications for PVC dip coatings. Metal parts coated with soft PVC can be found in a number of areas: Handles, levers, wall hooks, baskets in electroplating, pipe clamps or even handles. In the latter case, the high coefficient of sliding friction of the PVC surface comes into its own, while coatings with smooth and glossy surfaces are also quick and easy to clean.
Coating with PVC standard or special materials offers many advantages, such as
- Protection against the effects of chemicals and other substances
- Protection against corrosion
- Electrically insulating
- ESD-capable for packaging or transporting electronic devices with a surface resistance of 10 to the power of 7 ohms
- slip-resistant
- Quick to clean, smooth and shiny surface
- Pleasant and skin-friendly, matt surface with pearl structure
- Protective function against scratches and damage under high mechanical stress
- Better perception by choosing a standard colour with a signal effect
- phthalate-free PVC types for children's toys, use in hospitals, therapeutics and the food sector
- More flexibility for moving parts such as bellows thanks to PVC grade with lower hardness
For demanding applications, two PVC layers can also be applied, which can differ not only in colour, but also in hardness or electrical conductivity.
If the yellow PVC-Krevosol® coating applied to the component becomes exposed due to wear, the red PVC top layer of the two-colour coating is so worn that the component must be replaced with a new component for safety reasons.
Important quality information on PVC coating
Due to the production process of dipping, run-off drops and run-off marks may occur on the coated parts, as well as blowholes and bubbles in the case of large-area coatings.
In the case of complete coatings, defects are possible in the area of the workpiece suspension. Surfaces are cut free and trimmed manually. Cut edges will be sharp-edged and may also appear somewhat uneven in the cut.
Overall, these are not defects in the product.
Tolerances and dimensional accuracy in PVC metal part coating
![[Translate to English:] Tauchbeschichtung Wandstärken Unterschiede](/fileadmin/relaunch/formteile/tauchbeschichtung-wandstaerken-unterschieden.png)
The tolerances for the coating thickness and immersion depth are heavily dependent on the geometry of the metal parts to be coated. A concrete determination of the dimensional tolerances can therefore only be made after a test coating.
PVC coating is a non-pressurised coating process in which the PVC molecules dissolved in the PVC dipping paste gradually adhere to the hot surface of the parts to be coated. The metal parts, which are slowly lowered vertically or manually swivelled into the dipping bath due to their geometry, are successively wetted with the dipping paste. This means that the area of the metal part that first comes into contact with the dipping paste begins to form the wall thickness. Conversely, this area is the last to be pulled out of the dip tank, i.e. it has the longest dwell time in the dipping paste and therefore has the greatest layer thickness.
You can find out why certain part geometries have to be immersed in the dip bath for coating and whether PVC can also be bonded to metal parts in our FAQ area for moulded parts / injection moulded parts.
Now even more standard colours for PVC dip coating!
Choose from 17 standard colours for your PVC dip coating instead of natural-transparent
- Black (Jet Black)RAL 9005
- Anthracite (Anthracite Grey)RAL 7016
- Opal GreenRAL 6026
- Leaf GreenRAL 6002
- Emerald GreenRAL 6001
- Gentian BlueRAL 5010
- Sky BlueRAL 5015
- Flame RedRAL 3000
- Traffic RedRAL 3020
- Traffic OrangeRAL 2009
- Pure OrangeRAL 2004
- Silver GreyRAL 7001
- White AluminiumRAL 9006
- Rape YellowRAL 1021
- Traffic YellowRAL 1023
- Sulphur YellowRAL 1016
- Pure White*RAL 9010
- and natural-transparent
* The colour tends to turn yellowish at high process temperatures due to the geometry.
- Sapphire BlueRAL 5003
- Signal BlueRAL 5005
- Traffic BlueRAL 5017
- Turquoise BlueRAL 5018
- Azure BlueRAL 5009
- Light BlueRAL 5012
- Mahogany BrownRAL 8016
- Olive Yellow (Yellow Olive)RAL 6014
- Mint GreenRAL 6029
- Yellow GreenRAL 6018
- TelemagentaRAL 4010
- Blue GreyRAL 7031
- Telegrey (Telegrey 2)RAL 7046
- Grey (Fog Grey)RAL S-8000-N
PVC special material with pearl structure look
With the help of PVC-Krevosol ® types with a pearl structure look, we can produce dipped parts with a matt, fine-pored and skin-friendly surface. We are happy to offer this special material on request and supply it in black, sky blue, red, green, orange and light grey.
Thanks to the non-slip surface, PVC dipped parts with a pearl structure look are suitable for drumstick handles, which no longer slip out of the hand so quickly. The surface texture also has a very high-quality appearance.
Our Krevosol ® types
82 Shore A, phthalate-free/biocompatible
Special, medium-hard PVC material for the sheathing/coating and manufacture of standardised and customised dipped parts for therapeutic devices, hospital accessories, children's toys, phthalate-free and biocompatible products. Krevosol ® 1649 has very good resistance to disinfectants, which is particularly important for use in the medical and therapeutic sector.
The colours are available:
- blackRAL 9005
- red RAL 3000
- telegrey RAL 7046
75 Shore A, phthalate-free / medical applications
Special PVC material for the coating and manufacture of immersion parts for medical and invasive medical applications, children's toys, phthalate-free products intended to come into contact with food. Krevosol ® 3069 has very good resistance to disinfectants, which is particularly important for medical and therapeutic applications.
The colors are available:
- blackRAL 9005
- sky blue RAL 5015
- red RAL 3000
- raps yellow RAL 1021
68 Shore A, soft, resistant to high temperatures
Soft PVC material for the production of immersion parts, preferably in black RAL 9005, which are intended for temporary use at higher temperatures. The thermal stability of the HT material was determined in accordance with VW-P-1300 on dipped caps mounted on a mandrel. The results were determined at 200°C / 45 min, at 190°C / 90 min and at 180°C / 180 min and it was deduced that a 10K lower temperature doubles the possible service life.
ON REQUEST
Can be dyed in the remaining 7 standard colors.
85 Shore A, optionally with increased UV / ozone resistance
Medium-hard PVC material for mechanically highly stressed coatings, grip covers and electrical insulation in all 17 standard colors, including natural-transparent.
ON REQUEST
Increased UV and ozone resistance can be achieved by the optional addition of agents. However, this only applies to the colors black RAL 9005 and red RAL 3000.
75 Shore A, Optional ESD applications
PVC material for the production of electrically insulating sheaths and coatings for components in all 17 standard colors, including natural-transparent.
ON REQUEST
For the transportation and handling of electronic devices and components, KREMER can reduce the electrical surface resistance from 10^12 Ohm to 10^7 Ohm by optionally adding agents for ESD applications. However, this only applies to the color black RAL 9005.
68 Shore A, Standard type, optional for increased UV/ozone resistance
PVC material for the production of electrically insulating sheaths and coatings for components in all 17 standard colors, including natural-transparent
ON REQUEST
Increased UV and ozone resistance can be achieved by the optional addition of agents. However, this only applies to the colors black RAL 9005 and red RAL 3000.
80 Shore A, with pearl texture look
Innovative, medium-hard PVC material for the sheathing/coating with a pleasant feel and high-quality appearance.
Available in the colors:
- blackRAL 9005
- sky blue RAL 5015
- pantone greenRAL 3282
- red RAL 3000
- orange RAL 2009
68 Shore A, phthalate-free, biocompatible
Biocompatible plastisol. Hospital accessories, therapeutic devices, children's toys. In general, products intended to be cleaned with disinfectants.
Proof of biocompatibility must be provided by means of customer-specific tests.
Available in the colors:
- black RAL 9005
PVC coating of metal parts, glass or plastic products? Then go to KREMER!
Three reasons why you will be impressed by us as experts in PVC dip coating:
Experience and know-how
A coating with soft PVC can be applied with different types of Krevosol ® PVC and can therefore also meet different requirements. Regardless of whether you already know these criteria in detail in advance, or whether you would like to receive detailed advice from our employees - in both cases, you can expect expert advice in order to get exactly the PVC dip coating that is best suited to your purposes.
This is what our customers appreciate about KREMER employees. In the course of our more than 50 years of company history, we have developed a wide variety of PVC dipped parts for our customers and found a suitable solution even for tricky challenges. With this experience, we can not only offer you the most economically attractive option - you also benefit from our expertise.
No loss of time during procurement
Dip coating is often the last step for a product. Now everything has to happen very quickly. The parts coated with Plastisol Krevosol ® should be installed and distributed as quickly as possible. We at KREMER are prepared to meet these requirements: Our employees will provide you with a transparent, informative and individual quotation within 1-2 working days of receiving your inquiry about the dip coating of metal parts with soft PVC.
As a rule, implementation is also fast. We will be happy to inform you of our delivery times.
High quality coating
A PVC dip coating may seem relatively easy to apply, but it must be 100% adapted to the respective application so that it can reliably withstand the requirements in the long term. In order to meet this quality requirement, we at KREMER work exclusively with suppliers and partner companies with whom we have already had positive long-term experience. We are also certified to ISO 9001:2015 and pay attention to ecological and ethical criteria when selecting our suppliers.
Numbers – Data – Facts
Moulded parts/injection moulded parts division (as at 2022)
Number of dipped parts delivered in 2022
Realized drawing parts
Number of active customers in 2022
Sales share of largest customer in %
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