Choosing a swimmer for fishing or water recreation often comes down to finding a balance between cost, durability and weight. gunchThis is a hybrid variant that combines the rigidity of the body and the transportability of inflatable analogues, a material known as low-pressure polyethylene, which has a unique chemical structure that makes it resistant to shocks and low temperatures.
Unlike traditional inflatable boats, models made of this composite do not require constant pumping and are less prone to mechanical damage when in contact with a rocky bottom. Gunch (GUNH) is a specific fabric where the cord strands are woven in a special way and coated with layers of polymers, which gives it increased tensile strength, and these properties make this choice attractive for those who are looking for reliability without excess weight.
But despite the obvious advantages, the material has its own specifications of operation, which you need to know before buying. polyethylene This article will help you to properly care for the boat and extend its life, and in this article we will discuss in detail what a boat from gooncha is, how to assemble it properly and why it can become better than the classic PVC.
What is the material of goonch and its difference from PVC
The material, often referred to in common use as "gunch", is technically a reinforced fabric based on polyethylene (PDF) or polypropylene coated with protective layers, the main difference from the usual polyvinyl chloride (PVC) is the molecular structure of the polymer. PAP It has a higher crystallinity, which makes it tougher and more resistant to abrasion, but at the same time retains elasticity at negative temperatures, where PVC can "blown".
The process of producing goonch fabric involves weaving synthetic threads at right angles, and then they are sealed into a polymer matrix. reinforcementIf a PVC boat can be punctured quickly to eject air along the cord thread, the structure of the gunch often localizes the damage, preventing a catastrophic drop in pressure.
⚠️ Warning: Despite its high strength, the goonch material is afraid of open fire and sparks from the fire. The sparks that PVC will simply melt can burn through the plastic fabric in seconds.
It is also important to note the weight specifications: a HDPT gunch boat is generally lighter than a similarly sized PVC model, which is critical for those planning to carry the vessel alone or use it with low power. electric motorEach kilogram of weight affects the autonomy of the course.
Advantages and disadvantages of boats from PND
Considering gung As the main option for purchase, it is worth objectively weighing the pros and cons. One of the main advantages is the resistance to ultraviolet radiation. Polyethylene is less prone to fading and destruction under the influence of sunlight compared to cheap PVC varieties, which allows you to leave the boat on the water throughout the season without significant loss of properties.
In addition, the material has excellent chemical resistanceGasoline, oils, salt water and various fishing gear do not have a devastating effect on it. Goonch does not rot, mold and is not susceptible to corrosion, making it ideal for storage in unheated garages or in summer cottages.
- 🛡️ High impact resistance: the material is difficult to damage with branches or sharp stones in shallow water.
- ❄️ Frost resistance: retains elasticity at temperatures up to -50 C, allowing the boat to be used even in winter for ice fishing.
- ⚖️ Lightness: The specific weight of the fabric is lower than that of multilayer PVC, which facilitates transportation and loading.
However, there are also shortcomings. Gunch If there are many available two-component adhesives for PVC, then high-quality repair of HDPE often requires special equipment or industrial hair dryers, as well as specific chemical compositions. The surface of the material can be more slippery, which requires a high-quality anti-slip coating at the bottom (sleeve).
Design features and elements of the boat
Modern gung It's a complex engineering product where each element performs its function, and cylinders are made of a multi-layered material where the number of layers can vary from three to five, the inner layer ensures tightness, the middle layer holds the shape, and the outer layer protects against external influences.
Particular attention should be paid to the system. valveQuality models use lobe or screw valves that hold pressure reliably even at significant temperature changes. It is important that the valve is compatible with the pump you plan to use, so checking the complete set before buying is a must.
The bottom of the boat can be inflatable (NDND) or rigid (plywood/aluminum). The HDPG boat is often equipped with a low-pressure inflatable floor, as the cylinder material is tough enough to create the necessary keeledThis provides excellent cruising and glides when installing the motor.
To strengthen the structure in places of greatest tension (transom, joints of cylinders) are installed protector-beltThey take the bulk of the load when moving along the wave and prevent tissue from rupturing at the attachment points. Tracks are usually made of moisture-resistant plywood and are sheathed with the same material as the board, creating a single aesthetic and functional system.
Instructions for assembly and preparation for launching
Proper assembly is the key to the long service of your boat. Gunch boat. It requires careful handling, especially when laid out on the shore, and it is not necessary to drag the package over sharp stones or barbed grass, even if the material is durable. First spread out the bag or awning to create a clean area.
The pumping process should start from the bow, then proceed to the sides and lastly to the keel (if it is inflatable). hull geometryThe pressure in the cylinders should meet the manufacturer's recommendations, usually 0.2-0.25 atm. Excess pressure in hot weather can lead to rupture of the seams, and the lack of - to loss of driving performance.
☑️ Checklist before launching
After pumping, let the boat lie down for 10 to 15 minutes in the air. Polymers tend to stretch slightly under load, and the pressure may drop, during which time you can conduct a visual inspection for factory defects or damage sustained during transportation. Gunch It should be pulled like a drum, but retain a slight elasticity when pressed with a finger.
⚠️ Warning: Never leave a fully pumped boat in direct sunlight unattended on a hot day. The pressure inside the cylinders rises proportionally to the temperature, which can lead to an emergency.
Comparative table: Goonch (HDP) vs PVC
To make a final decision, a direct comparison of the specifications is useful, and the following table shows the key differences between the two popular materials used in shipbuilding.
| Characterization | Boat from Guncha (MHP) | PVC boat |
|---|---|---|
| Resistance to abrasion | Very high. | Medium/High (depending on density) |
| Operating temperature | -50°C to +60°C | -30°C to +50°C |
| Repairability | Complicated (requires special glue/dryer) | Simple (available remakes) |
| Weight of material | Easy. | Harder. |
| Resistance to UV radiation | High. | Medium (protection required) |
As you can see from the table, gunch It wins in extreme operating conditions and durability, but loses in the ease of self-repair. PVC remains a more versatile option for the average user who wants to be able to quickly seal a hole in field conditions.
Boat care, storage and repair
In order to gung After every fishing trip, especially in salt water or muddy rivers, the vessel must be rinsed with fresh water, which will wash away the sand that acts as an abrasive, and the remnants of fish slime, which can cause unpleasant odor when drying out.
Drying is a critical step. Polyethylene does not absorb moisture, but water can remain in folds and under the tooling elements. Before packaging, make sure that the boat is completely dry. Store the product in an unstretched or semi-folded form, avoiding sharp clamps on the folds, which, if stored for long periods, can turn into a complete dry tank. crack.
- 🧼 Use soft detergents to clean contaminants, avoid aggressive chemicals and solvents.
- 🌡️ Optimal storage temperature: from -20 C to +30 C, away from the heating appliances.
- 🐀 Protect the boat from rodents that can chew even tough material in search of food.
In case of damage, repairs gunch It's better to trust professionals or use special two-part adhesives specifically for polyolefins. Trying to glue HDPE with PVC glue will not work because the chemical nature of the materials is different. There are also methods of welding with hot air that create a monolithic bond that is as strong as the material itself.
Frequently Asked Questions (FAQ)
Can I use a boat from gooncha in winter for fishing?
Yeah, gunch It retains elasticity at very low temperatures, which allows it to be used in winter, but care must be taken: the material becomes harder in the cold, and the risk of damaging it against the sharp edges of the ice increases.
What is the maximum weight of such a boat?
The load capacity depends on the volume of cylinders and the design of the bottom, not just on the material. gunch It allows you to build boats with a lower safety margin of cylinders at the same load capacity, which makes them lighter. A standard two-seater boat usually can withstand 300-400 kg.
What is better to glue a boat from PND at home?
Conventional PVC adhesives are not suitable. Polyethylene requires special adhesives or hot welding. At home, it is easiest to use special remixes with two-component adhesives labeled "for HDPE" or "for polyolefins", pre-grinding and cleaning the surface.
How quickly does the color of the boat burn out in the sun?
The goonch material has a high resistance to UV radiation due to the addition of stabilizers to the polymer mass. Fading The boat is much slower than cheap PVC analogues. the boat can retain a rich color for 5-7 years of active operation in the open air.