What is HDPE sheet?
HDPE sheet is an environmentally friendly polymer sheet made from high-density polyethylene resin as raw material through high-temperature extrusion, calendering, cooling and shaping. The density is maintained at 0.94 – 0.97g/cm3. The structure is stable and has impact resistance, high wear resistance, and It has multiple advantages such as acid and alkali corrosion resistance, waterproof and moisture-proof, low temperature resistance, non-toxic and anti-aging, etc. The material is lightweight, supports multiple processing methods such as cutting, welding, bending, etc., and adapts to various complex construction scenarios. HDPE sheet makes up for the defects that metal plates are easy to rust, wood plates are easy to rot, and ordinary plastic plates are easy to crack. The outdoor service life can reach more than 15 years, and the indoor service life exceeds 20 years under normal working conditions. With high cost performance, it is widely used in building ground protection, chemical anti-corrosion lining, sewage treatment, aquaculture, food operation platform, storage base plate, mechanical wear-resistant lining plate, municipal enclosure and other fields. Whether the selection of plate thickness is appropriate will directly affect the project use effect. Length of service and overall procurement costs.
Standard HDPE Sheet Sizes & Thicknesses
HDPE plastic sheet is divided into national standard conventional specifications and customized specifications. The mainstream mass production sheet in the market has uniform size and strong versatility, which can meet the needs of more than 80% of conventional projects. Special non-standard size, oversized sheet surface and special thickness can support customized processing by manufacturers. In order to facilitate project selection, procurement check and construction docking, the following general industry standard specification table is sorted out, clearly listing thickness, size, plate performance and adaptation scenario, and adapting to various engineering selection references.
| Normal thickness (mm) | Standard length and width size (m) | Core characteristics of HDPE sheet metal | Universal adaptation scenarios |
| 1–3 | 1×2、1.2×2.4、1.5×3 | Light texture, good flexibility, easy to cut and bend, very low weight | Outdoor sign board, product packaging protective plate, light equipment isolation liner, temporary protective baffle |
| 5–8 | 1×2、1.2×2.4、2×3 | Toughness balance, waterproof and wear-resistant, not easy to deform, light impact resistance | Food equipment lining, logistics tray base plate, small aquaculture baffle, indoor simple protective plate |
| 10–15 | 1.2×2.4、1.5×3、2×4 | Strong compression resistance, stable structure, excellent impact resistance, convenient construction | Building decoration ground protection, workshop anti-skid bearing plate, sewage treatment equipment lining, municipal enclosure bottom plate |
| 20–30 | 1.5×3, 2×4, customizable length and width | High rigidity, high wear resistance, corrosion resistance, excellent load-bearing performance | Chemical equipment anti-corrosion liner, heavy storage shelf liner, mechanical wear liner, large-scale culture pond bottom plate |
| 40–50 | Full size customization | Ultra-high strength, heavy impact resistance, high strength wear resistance, stable structure | Industrial heavy load-bearing plate, mine wear-resistant lining plate, large-scale anti-corrosion engineering base plate, special equipment structural parts |
In addition to the conventional specifications in the above table, regular HDPE sheet manufacturers can support 1 – 50mm full thickness customization, the maximum customization width can reach 2m, the length is unlimited, and it can be integrally molded according to the project drawing size to reduce splicing gaps and improve the overall stability and aesthetics of the project.
Six factors affecting HDPE sheet thickness
HDPE board selection in many projects often encounter the problem of easy deformation and increased cost in thickness selection , there is no unified standard for plate thickness, mainly subject to 6 core conditions, combined with field conditions to match the thickness of the performance and budget.
load bearing
Bearing load is the primary factor, the greater the load, the thicker the HDPE sheet. 3 – 8mm HDPE sheet is suitable for light static load, 10 – 15mm is suitable for medium load bearing, long-term heavy pressure, dynamic heavy load scene should be more than 20mm HDPE sheet to prevent depression fracture.
use environment
Open air, strong acid and alkali, low temperature, high friction and other harsh conditions need to thicken HDPE sheet to offset loss; indoor dry non-corrosive environment, select conventional thickness HDPE HDPE sheet can be.
shock resistance requirement
Thickness determines the impact resistance. Within 10mm, only light protection is provided. Above 10mm, moderate impacts can be dealt with. For high protection scenarios such as heavy object impacts, 30mm thick HDPE sheets are required.
laying span
The support spacing is large, the suspended span is long and easy to bend, so the HDPE sheet should be thickened; the thin HDPE plastic sheet can be used for the working condition of dense support points and small span.
durable years
Short-term temporary projects within the year optional thin plate; more than 10 years of long-term projects appropriate thickening, reserve aging wear allowance, reduce replacement costs in the later period.
processing needs
Bending, special-shaped cutting, hot welding as far as possible do not use ultra-thick HDPE board, avoid processing cracking; only flat bearing without secondary processing, can choose thick plate as needed to enhance stability.
How to choose the right HDPE sheet thickness?
The working conditions, loads and use requirements of different industries vary greatly, and the general specifications cannot adapt to all scenarios. Combined with the landing experience of major industries, the HDPE sheet thickness selection standard is accurately divided into sub-fields, covering mainstream application scenarios, and can be directly compared with the selection to meet the construction needs of various projects.
Building decoration industry
HDPE sheet is mostly used for decoration ground protection, wall protection and temporary enclosure in the construction field. The core requirements are anti-collision, anti-scratch, anti-compression, and complete protection of the original base. Home improvement, short-term work equipment for ground protection, priority to choose 10mm HDPE sheet, moderate thickness, compression and wear resistance, can withstand workers walking, tools slightly dropped, material stacking, while light material, laying and demolition are very easy; large construction sites, long-term construction or heavy equipment access scenes, it is recommended to choose 12 – 15mm thick HDPE plastic sheet, to prevent long-term pressure deformation damage. If there is a need for ground protection, you can choose Xinxing plastic HDPE ground protection mat, a variety of thickness specifications to adapt to various decoration construction scenarios.
Chemical industry
For chemical equipment lining, acid and alkali pool, sewage treatment tank and other scenarios, the core requirements are corrosion resistance, leakage prevention and structural stability. Small sewage treatment equipment, simple anti-corrosion lining, choose 8 – 10mm plate to meet the needs; medium-sized chemical pool, conventional sewage treatment project, recommend 15 – 20mm HDPE sheet; large-scale industrial anti-corrosion pool, long-term contact with strong acid alkali, high temperature corrosive medium scene, must choose 25 – 30mm thick plate, to prevent HDPE sheet aging damage, leakage hidden danger.
aquaculture industry
Aquaculture pond, nursery pond, water tank baffle scene, the requirements are waterproof, anti-corrosion, anti-water pressure, non-toxic. Small household, small nursery pond, choose 5 – 8mm thin HDPE board, light weight, easy to install; large aquaculture pond, deep water aquaculture pond, water pressure, need to choose 10 – 15mm HDPE sheet, resist water pressure, prevent HDPE plastic sheet deformation leakage; ultra-high deep water aquaculture, large-scale aquaculture projects, it is recommended that 20mm and above thick HDPE sheet.
Logistics warehousing industry
Storage shelf base HDPE sheet, logistics tray, warehouse ground anti-skid base HDPE sheet, the core requirements for load-bearing, wear-resistant, anti-skid. Light shelves, carton material stacking, choose 5 – 10mm HDPE plastic sheet; medium goods, normal stacking storage scene, choose 10 – 15mm HDPE board; heavy hardware, mechanical equipment storage, long-term heavy pressure conditions, must choose 20 – 30mm thick HDPE sheet, to ensure long-term load-bearing deformation.
food processing industry
Food operation platform, food cleaning pool, food equipment lining, the core requirements for non-toxic environmental protection, easy cleaning, water corrosion resistance. This scene has no heavy load, only needs to meet the daily wear resistance, waterproof requirements, conventional selection of 5 – 8mm food grade HDPE sheet can be moderate thickness, easy to clean, no sanitary dead corners, fully in line with food production safety standards.
Machinery and mining industry
Mechanical wear-resistant lining plate, mine conveyor lining HDPE sheet, equipment collision HDPE plastic sheet, working conditions for high frequency friction, heavy impact, high strength wear, the thickness and strength of the HDPE sheet requirements are extremely high. Conventional mechanical protection uses 15 – 20mm HDPE plastic sheets; mining, heavy equipment and other high wear, high impact scenes, must use 30 – 50mm thick HDPE sheets, greatly improve wear and impact resistance, reduce replacement frequency.
Practical case: 10mm HDPE sheet for building ground protection
During building decoration construction, ceramic tiles, marble and wood floors are easy to be scratched, bumped and stained. Traditional plastic film and cardboard protection are easy to be damaged and expensive to replace repeatedly. 10mm HDPE sheet is the mainstream of home decoration and tooling ground protection.
A 8000㎡ office building decoration project in a certain place, the ground is paved with high-end marble, and woven plastic film is used in the early stage. In only 15 days, a large area of plastic film is damaged and wrinkled, heavy objects directly crush the plastic film, floor tiles are full of scratches and stains, and the repair cost remains high. After replacement of 10mm HDPE sheet, the HDPE plastic sheet surface shall be spliced smoothly and skid-proof. This HDPE sheet is compression and impact resistant, can withstand people walking, tool handling, material stacking, wear-resistant surface can resist sand scraping, waterproof and impervious to cement, paint, glue pollution. 60 days of construction without scratch damage to the ground, the completion of thick HDPE sheet can be completely recycled reuse, compared with disposable protective materials comprehensive cost savings of 30%, construction efficiency significantly improved. This example proves that 10mm HDPE sheet is the gold thickness of ground protection, taking into account protection, construction convenience and cost performance, adapting to most decoration scenarios, and is also the most recognized HDPE sheet specification in the decoration industry.
HDPE sheet thickness selection common errors
Most of the HDPE plastic sheet waste, use failure, time limit rework problems, are due to thickness selection errors. Combined with a large number of landing cases in the industry, summarize 4 high-frequency selection errors, help the project accurately avoid pits, and realize scientific selection.
Thicker HDPE sheets perform better
A lot of purchases exist “thick HDPE sheet omnipotent” wrong cognition, blindly choose ultra-thick HDPE sheet. In fact, the use of thick HDPE plastic sheets in non-load-bearing and impact-free light scenarios not only greatly increases the procurement cost, but also increases the construction difficulty due to excessive weight, but also causes material waste and extremely low cost performance.
The thickness of the same scene is unified and universal
Ignoring the influence of construction span and support spacing, different laying spans of the same scene require different thicknesses. Large-span suspended laying, the use of conventional thickness HDPE sheet will appear bending deformation, must be properly thickened; support dense small-span scenes do not need to be thickened to avoid excessive selection.
Random selection of thin plates for short-term projects
Some users think that short-term construction projects do not need to pay attention to thickness, and too thin and inferior plates are selected. There is a risk of equipment collision and material falling in the short-term construction site, and the thin plate is easily damaged, but it needs to be replaced frequently, delaying the construction period, increasing the labor and material costs, and losing more than it gains.
Only focus on thickness, ignore HDPE sheet quality
Simple calibration of thickness parameters, ignoring raw material purity, process differences. Some inferior recycled materials, even if the thickness is up to standard, toughness, wear resistance and aging resistance are extremely poor, and it is easy to crack and deform during use, which cannot achieve protection and load-bearing effects.
Cost Differences Between HDPE Sheet Thicknesses
HDPE sheet core pricing standards for thickness, raw materials, specifications, thickness is the most important factor affecting the unit price, the higher the thickness of the sheet, the larger the amount of raw materials, the longer the production time, the higher the comprehensive unit price. At the same time, the price of new material HDPE sheet is higher than that of recycled material plate, and the cost performance is adapted to different budget items. The following cost differentiation analysis is made for mainstream thickness HDPE sheet.
1 – 8 mm thin HDPE sheet
This section HDPE sheet material consumption is less, production efficiency is high, unit price is the lowest, the overall purchase cost is low. Suitable for light protection, temporary use, low load scenarios, short-term projects with limited budget, comprehensive cost-effective.The disadvantage is that the load bearing and impact resistance are limited and cannot be used in heavy duty conditions.
10 – 15 mm medium HDPE sheet
This interval HDPE sheet belongs to the general gold specification of the industry, with moderate thickness and balanced performance, taking into account wear resistance, compression resistance and impact resistance, and adapting to most mainstream scenarios such as construction, breeding and conventional corrosion prevention. Moderate unit price, no excessive premium, recyclable and reusable, the lowest long-term use cost, is the preferred thickness for commercial and engineering projects.
The raw material consumption of HDPE sheet in this interval has been greatly increased, the production process requirements are higher, and the unit price is significantly higher than that of conventional sheet. It is mainly suitable for heavy load bearing, strong corrosion and high wear conditions. It is highly targeted and does not need to be selected for non-special conditions to avoid cost waste.
40 – 50 mm extra thick HDPE sheet
HDPE sheet in this section belongs to customized special sheet, with large raw material consumption, long production cycle, high process difficulty and highest unit price. It is only suitable for mines, heavy industries, large-scale special projects, and is dedicated to niche scenarios. The selection of ordinary projects will cause serious cost waste.
Overall, HDPE sheet cost and thickness are positively correlated with each other, and the core principle of project selection: thickness selection according to needs, no blind thickening, no deliberate thinning, and optimal thickness matching in combination with working conditions can balance performance and cost.
HDPE sheet procurement and supplier selection skills
Select the HDPE sheet thickness is only the foundation, high-quality sheet and reliable suppliers to ensure the project landing, reduce after-sales hidden dangers, the following 5 items to adapt to the project bulk procurement of HDPE sheet selection procurement skills
Distinguish HDPE sheet raw material quality
Distinguish between new material HDPE sheets and recycled material HDPE sheets. New material HDPE sheets have pure color, good toughness, environmental protection and durability, and are suitable for food and outdoor long-term projects; recycled material HDPE sheets are low-priced, have many impurities and are easy to crack, and can only be used temporarily and simply. It is prohibited to use in anti-corrosion and food projects.
Check HDPE sheet thickness accuracy
HDPE sheet thickness tolerance of regular manufacturers shall be controlled within ±0.2mm, and the HDPE sheet surface shall be smooth and regular; HDPE sheet size deviation of small workshops is large, the HDPE sheet surface is concave and convex, and the stress after laying is uneven and easy to deform. Tolerance standards must be confirmed before purchase.
Manufacturers’ HDPE Sheet Custom Production Capacity Review
Preference is given to HDPE sheet source manufacturers with their own extrusion production lines, supporting non-standard size, special thickness, special-shaped processing, one-stop processing of cutting, punching and welding; traders have no production capacity, long customization cycle and no after-sales guarantee.
Verification samples and qualifications
Bulk purchase HDPE sheet first obtain samples to check the texture and wear resistance, food, municipal projects require manufacturers to provide environmental protection, food grade, anti-corrosion test report, to ensure smooth acceptance of the project.
Confirmation of supply and after-sales
High quality HDPE sheet manufacturers are in stock, providing free cutting and typesetting, fast delivery services, quality problems can be returned; engineering procurement to verify the delivery cycle in advance to prevent delays in construction progress.
Common problem frequently asked
Q: Can HDPE sheet be used for long-term soaking in water?
Very good. HDPE board has excellent waterproof and moisture-proof performance, does not absorb water, does not penetrate water, does not expand when meeting water, does not rot, can be used underwater and humid environment for a long time, is the preferred board for aquaculture, pool engineering and sewage treatment projects, and has long service life after soaking in water.
Q: Can HDPE sheets be recycled?
The new HDPE board can be used repeatedly and recycled. The high-quality HDPE sheet has strong toughness and aging resistance. It can be cut and reused for the second time after construction and demolition. The waste HDPE plastic sheet can also be recycled and processed. It belongs to green environment-friendly recyclable material without solid waste pollution.
Q: Can HDPE sheets of different thicknesses be spliced?
Mix and match stitching is not recommended. Different thickness of HDPE board flatness is inconsistent, after joining together will appear height difference, uneven easy to crack, become warped edge.
Q: What is the high temperature resistance of HDPE sheet? Is it suitable for hot scenes?
the long-term service temperature of that conventional HDPE sheet is less than or equal to 80 DEG C, and the conventional HDPE plastic sheet can withstand short-term high temperature, and is not suitable for the continuous work condition with the high temperature of more than 100 DEG C. Ordinary indoor and normal temperature industrial scenes are completely suitable. For high-temperature equipment and high-temperature environment, the manufacturer shall be communicated in advance to customize high-temperature resistant modified plates.
Q: Is special glue required for fixing HDPE board laying?
No forced gluing is required. Conventional ground tiling and protection scenes can be directly laid and fixed by fasteners; anti-corrosion and anti-seepage works can be spliced by thermal welding process, with stronger sealing performance, more durable than glue fixation and no falling hidden danger.
Q: Do HDPE sheets need sunscreen treatment for outdoor use?
Conventional brand new HDPE sheet has anti-UV and anti-aging performance, which can be directly used outdoors; for extreme outdoor scenes with long-term strong light exposure, modified HDPE sheet with anti-UV additive can be selected to further prolong outdoor service life and prevent slight fading and aging.
Q: Which is more suitable for load-bearing scenarios, HDPE or PP?
HDPE sheet is more suitable for load-bearing conditions. The toughness, impact resistance and compression resistance of HDPE plastic sheet are far superior to those of PP plate, and it is not easy to crack and deform under load bearing;PP plate has high hardness but poor toughness, and is easy to crack under heavy pressure and impact, so it is only suitable for light anti-corrosion and isolation scenes.
Q: How long will the construction period of HDPE sheet with customized thickness be extended?
HDPE sheets with conventional standard thickness shall be delivered immediately from stock; HDPE plastic sheets with non-standard customized thickness and super-large size shall be delivered immediately from stock, with conventional construction period of 3 ‰ 7 days. The source manufacturer has sufficient capacity to expedite production to meet the emergency construction requirements of the Project.
conclusion
HDPE sheet thickness selection is the key to the project landing, directly affecting the sheet life, construction effect, acceptance results and procurement costs, there is no universal thickness, light temporary protection selection of 1 – 8mm thin HDPE sheet, construction and conventional industrial scenes priority 10 – 15mm thick HDPE sheet, heavy load-bearing, anti-corrosion and wear-resistant special projects are required to select more than 20mm thick HDPE plastic sheet; As long as you avoid the selection error, select the right thickness according to the working conditions and optimize the source manufacturer, you can take into account the performance, procurement budget and service life. If you don’t know the thickness of the project, you need non-standard customization or batch procurement. Welcome to contact Xinxing Plastics. We will provide you with free one-to-one selection scheme, accurate quotation and professional construction guidance to avoid material waste and engineering rework hazards from the source.
