Any inflatable boat made of polyvinyl chloride, regardless of manufacturer, over time requires attention to its seams. It is the area of connection of cylinders with the bottom or floorboard is the most vulnerable, as it experiences enormous loads during operation. Boat stop - it is not just a decorative strip, but a critical element of the structure, ensuring tightness and protecting the joint from mechanical damage.
Many owners of boats are faced with the need to repair or strengthen this area. Inflatable boats They're in constant contact with water, sand, rocks and temperature changes, which leads to material stratification. If you notice the stripping off, or you just want to proactively reinforce the structure, you'll have to figure out the intricacies of working with the material. PVC material and specialized compounds.
In this article, we will discuss in detail the process of selection of materials and the technology of work execution. single-component Two-component glue, how to properly prepare the surface for maximum adhesion and what errors can lead to leakage in a couple of months. halt This will extend the life of your boat for many years.
Selection of material for a timber and tape
The first thing that starts with a quality repair or tuning is to get the right parts. A squat tape is a band of dense PVC, often reinforced with a grid for strength. It's important to find a material that is chemically identical to the material of the boat itself. Using incompatible materials will cause the adhesive to fail or the connection to be weak.
When choosing a tape, pay attention to its density, which is usually measured in grams per square meter. Most inflatable boats use a material density. 750-900 g/m2Thinner options can break quickly, and too thick will be difficult to glue without the formation of "steps" for which garbage will cling. Reinforcing cord The inside of the tape should be whole and evenly distributed.
Although black is considered the classic color and the most resistant to ultraviolet light, modern manufacturers offer different shades. However, if you change the halt on the whole boat, you better take the material of the same brand as the boat itself, for example, the first time you can see the lights on the surface of the boat. Boatsman or Nordmanto exclude differences in elasticity at temperature expansions.
- 📏 The width of the tape: It varies from 50 to 70 mm, choose depending on the area of the joint.
- 🧪 Chemical compatibility: Make sure that the composition of the PVC tape matches the material of the balloon.
- ☀️ UV protection: The material must have stabilizers to prevent destruction in the sun.
⚠️ Attention: Never use fabric-based materials or conventional building plastic to stick the halt, and they will not withstand water pressure and compression-expansion cycles when pumping the boat.
Necessary tools and choice of glue
The success of the operation depends on 90 percent on the correct glue. PVC uses special polyurethane compounds. They are divided into single and two components. The former are ready for use immediately, but they dry longer and can be less resistant to aggressive environments. The latter require mixing with a hardener, which creates a chemical reaction that provides a chemical reaction that allows you to use the drug. monolithicThe strength of the boat is often superior to the material itself.
In addition to glue, you'll need a tool kit. You'll need a dryer to warm up the glues -- you won't have a household glue, you'll need a temperature-adjusted building, you'll also need a roller, a degreaser (acetone or special cleaner), adhesive brushes and scissors. tool This will prevent bubbles and non-proglytes.
Among the popular brands of glue have proven themselves Texacol, Desmocoll, Moment. (special series for PVC) and two-component compositions of the type BosticFor critical sites like the halt, it's better to use two-part systems, and they create a seam that you can't tear without damaging the material itself.
It's important to keep in mind safety. Solvent vapors are toxic, so all work should be done in a well-ventilated area or outdoors. Don't let glue get on your skin or eyes. Store glue components in tightly sealed containers away from fire sources.
Preparation of the surface of the boat and the ribbon
Surface preparation is the stage where the most mistakes are made, where even the most expensive glue won't stick on a dirty, greasy or smooth surface, where the gluing site needs to be thoroughly washed and dried, and any dust or grain of sand will become the center of detachment in the future.
After cleaning, you have to machin the glossy layer of PVC, you have to clean it, and you have to use sandpaper with graininess. P80-P120So your job is not to cut the material, but to create a matte roughness to increase the contact area of the glue, and you need to clean both the balloon and the back of the shingle tape.
☑️ Checklist for surface preparation
The final stage of preparation is degreasing. Use it. acetone Or a specialized degreasing agent, wipe the surface with clean rags without pile, moving from center to edge. forbiddenAs the skin fat will worsen adhesion.
- 🧹 Cleanup: Remove all dirt, silt and old glue residues.
- 🔨 Grinding: Create a uniform mattress throughout the area of gluing.
- 🧼 Degreasing: The final step before applying chemistry.
⚠️ Attention: Do not use gasoline, kerosene or 646/647 solvents for degreasing. These can soften the plasticizers in PVC, which will cause the material to swell and destroy the tissue structure.
Technology of applying glue and gluing
The gluing process requires patience and time intervals. If you use two-part glue, mix the base with the hardener in the proportion specified by the manufacturer (usually 10:1 or 5:1) and mix thoroughly. 4-6 hours (mixture lifetime).
The adhesive is applied with a brush in a thin, uniform layer on both the adhesive surfaces, both the balloon and the tape. Don't allow puddles or gaps to form. After applying the first layer, let it dry to "stick" (usually 20-40 minutes, depending on temperature), then apply the second layer. It is the two-layer application that ensures the maximum strength of the seam.
After the second layer has dried out (when the glue stops sticking to the finger, but still retains stickiness), the surfaces are connected. It is important to combine the parts the first time, because the grip is great. Immediately after docking, you need to carefully roll the glue place with a roller from the center to the edges, extruding air. For final polymerization, the seam is warmed to temperature with a hair dryer. 60-80°C And they roll again.
What to do if the glue thickens?
If the adhesive in the jar has thickened or become covered with film, you can try to resuscitate it by adding a little special solvent for polyurethane adhesives and mixing thoroughly. However, for critical nodes (tipping, transom), it is better to use fresh composition, since the loss of adhesive properties can lead to rupture of the seam on the water.
The quality of the gluing depends on the temperature in the room. +20...+25°CAt lower temperatures, the polymerization process slows down, and at higher adhesives can grab too quickly before they can penetrate the pores of the material.
Comparison of specifications of adhesive compositions
To make it easier for you to navigate the variety of PVC chemistry, we've developed a comparison table that will help you choose the best option for your tasks and budget, and remember that saving on adhesive when repairing a boat is the risk of losing a boat at the most inopportune time.
| Parameter | single-component | Two-pronged | Polyurethane (Prof. |
|---|---|---|---|
| Drying time | 24-48 hours | 12:24 hours. | 24 hours. |
| Strength of the seam | Medium | High. | Very high. |
| Heat resistance | Up to +50°C | Up to +80°C | Up to +100°C |
| Difficulty of application | Low. | Medium | High. |
| Shelf life of the mixture | 12 months. | 4-6 hours | 6-8 hours |
As you can see from the table, double-component They're the middle ground for home renovations, they provide excellent strength and heat resistance, withstanding the sun's heat and contact with hot water, and professional compounds require skills, but they give the best results for commercial use.
Single-component adhesives are good for minor, cosmetic repairs or gluing elements that do not carry high loads. However, for a hinge timber that holds pressure and protects the seam, it is better not to take risks. The choice of more complex chemistry will pay off in the long run.
Drying, quality control and first start-up
Once you roll the tape and warm up the seam, you can't pump the boat right away. The glue has to go through a full polymerization cycle. It usually takes 24 to 72 hours depending on the humidity and temperature, and early operation will cause the glue to float under pressure and the leakage will be disrupted.
Before you first pump, carefully examine the seam, it should be smooth, without bloating, bubbles and unpatched areas. Swipe your finger along the junction, the transition should be smooth. If you find defects, they must be repaired immediately until the boat is inflated. To do this, the defective area is carefully cut, cleaned and reglued.
Leave the boat with a sticky halt under light weight (such as sandbags) for a day, which will ensure tight pressing of the tape along the entire length while the primary crystallization of the glue is underway.
The first launch is best done in a safe place, near the shore. Pump the boat to working pressure and leave it in the sun for a couple of hours. The pressure inside will increase, and if there is a weak spot, it will manifest. shaft-joint.
- ⏳ Excerpt: Allow the glue to gain full strength (at least 24 hours).
- 👀 Visual control: Check the stitch for no defects.
- 💨 Pressure test: Check the tightness under load before leaving.
⚠️ Attention: Do not try to accelerate the drying of glue with powerful heaters or open fire. Local overheating can lead to deformation of PVC and the appearance of microcracks in the structure of the material.
Frequently Asked Questions (FAQ)
Can I make a stop in the cold?
At temperatures below +10°C, the polymerization process of the adhesive is almost stopped, and the PVC itself becomes rigid and loses its adhesive properties. The optimal temperature for work is from +15°C to +25°C. If you need to repair in the cold, place the boat in a warm room for at least a day before and after gluing.
How to replace a special roller for rolling?
As a last resort, you can use a smooth wooden hammer handle or a rounded blunt object wrapped in fabric. However, a professional rubber roller provides uniform pressure and does not damage the material. The use of sharp or faceted objects is unacceptable, since you can push or cut the balloon.
How long does a properly glued stop last?
When using high-quality two-component adhesives (Texacol, Desmocoll) and the technology, the seam life is 10-15 years or more, and in fact, the boat itself survives the halt, unless it is mechanically damaged (puncture, cut against sharp stones).
Do I need to clean the old yard completely?
Yes, if an old halt has detached or damaged, it must be removed completely. The surface stripping to the cylinder material itself is mandatory to ensure a reliable adhesion of the new layer. The new tape pasting over the old or partially detached is a gross mistake that will lead to rapid repairs.
How wide should the halt be?
The standard width of the shale belt for most inflatable boats is 50-70 mm. It should overlap the seam of the connection of the cylinder and the bottom with a margin of 15-20 mm on each side. Too narrow tape will not provide reliable protection, and too wide will look unaesthetic and can interfere with the installation of attachments.