Inflatable vessel operation inevitably involves the risk of mechanical damage: rocky bottom, sharp driftwoods on the shore and accidental contact with the pier leave traces on the water. polyvinyl chlorideEven the best quality material becomes thinner over time, which can cause a puncture at the most inopportune moment.
The extra protection sticker, or so-called "armor," allows you to extend the life of the boat significantly, and it's not just a cosmetic procedure, it's an effective way to do it. reinforce critical areas The right material and application technology will provide reliable protection for long seasons.
In this article, we'll look at all the nuances of the process, from the selection of glue to the final drying, and you'll learn why a regular patch isn't always suitable for large areas, and how to avoid bubbles. Competent surface preparation is half the success of the entire operation.
Selection of material for strengthening the bottom and cylinders
The first step is to find the right material, and the market offers many options, but not all of them are equally effective at protecting against abrasive wear. tissue-density And the quality of its reinforcement.
The best solution is to use the same fabric that the boat itself is made of, or specialized overlays of increased density. Often for this purpose, take material with a density of 850 to 1100 g / m2. The thinner versions may not withstand constant friction on pebbles or sand.
⚠️ Note: The use of rubber-based or non-PVC-coated materials for booking inflatable boats is unacceptable, as they will not provide a sealed connection and will peel off under load.
It's important to consider the color and texture of the material. Smooth surfaces are easier to wash, but matte is better at hiding scratches. anticorrosion The interior of the boat is used in salt water.
- 🛡️ Specialized tape for protection of the bottom with reinforced reinforcement.
- 🧵 PVC fabric of the same density as the main product (for perfect match).
- 🌊 Teflon coated materials to facilitate sliding through water.
- 🎨 Color inserts to create individual design and zoning.
Necessary tools and preparation of glue
The quality of the gluing depends on the adhesive composition used. For PVC materials, universal adhesives like "Moment" or epoxy resins that make the seam stiff are categorically not suitable. polyurethanewhich, after drying, remains elastic.
Beyond the glue itself, you'll need a set of tools to prepare the surface and apply the compound. The degreaser must be aggressive, but not dissolving the base. Acetone or special PVC cleaners are best.
Secrets of the professionals
How to prolong the life of the finished glue?: After mixing the components of the glue, a limited time is active (usually 40-60 minutes). In order not to throw out the residues, you can add a few drops of a special stop solvent (if it is provided by the manufacturer) or simply close tightly and remove it in the refrigerator, although this will only briefly prolong the life of the mixture. It is better to cook exactly as much as you have time to spend.
Indoor temperature is critical, with the ideal range being between +18 and +25 degrees Celsius, and at lower temperatures, polymerization slows down, and at higher adhesives, it can grab too quickly before it can penetrate the material's structure.
- 🧴 Two-component glue (basic + hardener) for PVC.
- 🧼 Degreasing agent (acetone, white spirit or special means).
- ✂️ Scissors, ruler and marker for marking.
- 🖌️ Taste with hard bristles or rollers for application.
Preparation of the surface of the boat
The most important stage, where most mistakes are made, is that the surface should be completely clean, dry and fat-free, and any dust, moisture or fat film will become a barrier, and the armor will simply not stick or will leave over time.
First, the boat is thoroughly washed with soap and dried, then the gluing site is cleaned with an abrasive, and this is done with medium-grain sandpaper or a special grinding sponge, and the goal is to remove the top glossy layer and create microroughs for better adhesion.
After mechanical cleaning, the surface is defatted again, and this is done with movements from center to edge, constantly changing the napkin, and if there are traces of dirt or yellowness on the napkin, the procedure is repeated to the perfect purity.
Don't neglect it. temperature-regulation The solvent has to evaporate completely, otherwise the vapors will remain under the glue and form bubbles, and exposure time is usually 10-15 minutes.
Technology of applying glue and gluing
The gluing process requires careful timing and careful mixing: the two-part glue is mixed strictly according to the instructions, usually in a ratio of 100:4 or 100:6 (base: hardener). Careful mixing ensures that the catalyst is evenly distributed.
The adhesive is applied in a thin layer to both surfaces that are glued together, both on the boat and on the armor, and the first layer is absorbed into the structure of the material, creating an adhesive base, and after 10 to 15 minutes, when the surface stops sticking to the fingers, the second layer is applied.
☑️ Checklist before gluing
The parts are joined after the second layer of glue has dried to a "stick" state (the finger does not stick, but the glue is still sticky), the parts are combined and carefully rolled with a solid roller from the center to the edges, extruding air. The movements must be strong and confident.
⚠️ Warning: Air or dust that has fallen under armor cannot be removed after rolling in. If a defect is noticed immediately, the edges can be carefully warmed with a hairdryer and tried to smooth out, but it is better to prevent error.
Drying and polymerization of seams
Once mechanically connected, the chemical reaction process is not yet complete: the complete polymerization of the adhesive takes 24 to 72 hours depending on temperature and humidity, and early operation of the boat will result in the edges shifting and loss of leakage.
On the first day, it is better to leave the boat in a straightened state at room temperature. You can not heat the product with a hairdryer or put it in the sun immediately after gluing - this can cause glue foaming or seam deformation.
Use loads: During drying (the first 2-4 hours), the gluing site can be pressed with sandbags or cans of water to ensure tight contact of surfaces throughout the area.
The quality of the seam can be checked visually and by touch, it must be smooth, without bloating or detachment, if you hear a crunch or see a detachment when you bending, then the technology has been broken, and the site needs reworking.
Comparison of protection methods and materials
The choice of protection strategy depends on the operating conditions: for quiet fishing on lakes, only the heels of cylinders are reinforced; for rafting on rocky rivers, full bottom armor and perimeter protection are required.
Below is a table comparing different approaches to strengthening the PVC boat hull.
| Type of protection | Materials | Complexity | Efficiency |
|---|---|---|---|
| Tape | Self-adhesive PVC tape | Low. | Low (for sharp stones) |
| Local. | Tight PVC fabric (on glue) | Medium | High (in contact areas) |
| Full armor. | Fabric 1100g/m2 (per glue) | High. | Maximum |
| Liquid rubber | Polymer spraying | Medium | Medium (protection against scratches) |
It is worth noting that rubber It's good for small scratches, but it doesn't save you from a serious puncture. The mechanical armor of the fabric is the uncontested leader in strength.
Combined approach: The optimal solution is a combination of local armor made of dense fabric on the bottom and belt protection of the sides to save weight and maintain the maneuverability of the boat.
Frequent errors and ways to fix them
Even skilled craftsmen sometimes miss, and one of the common problems is that they have pockets of air, and if the bubble is small and it's near the edge, you can try to prick it with a needle and roll it in with a hair dryer.
The detachment of the edges usually indicates poor degreasing or temperature-drying, in which case the area is carefully trimmed, cleaned again, degreased and glued using an additional layer of glue.
⚠️ Warning: Never try to fast-paced armor in the field or in wet weather, and humidity above 75% critically reduces the adhesion of polyurethane adhesives.
Using the wrong adhesive, for example, water-based, will cause the armor to fall off at the first tension. specialty provide the necessary elasticity and strength of the connection.
Can I put armor on an already assembled and inductive boat?
Technically possible, but extremely inconvenient and risky: an inflated vessel has tension that can displace parts during the gluing process, and there is also the risk of accidentally piercing the boat with a tool, and it is better to do the work on a deflated but straightened boat.
How much does PVC glue dry at a temperature of +15 degrees?
At a temperature of +15 degrees, the polymerization time increases by 1.5-2 times. If the instructions recommend 24 hours for gaining strength, then in the cool you should wait 48 hours.
Do I need to clean the entire surface of the boat under armor?
No, it only cleans the area where the glue is applied, usually the bottom, the heels of the cylinders and the bottom of the sides, and the rest of the surface remains unchanged so as not to disturb the factory coating and geometry.
How to replace a special glue for PVC in an emergency?
There is no complete replacement. Two-component polyurethane compounds are unique. In extreme cases, you can use single-component PVC adhesives (for example, Kleyberg), but the strength of the seam will be lower and the drying time will be longer.