安全鞋鞋底材料怎么挑?光泽度不对,模具温度先查

应用领域 发布时间: 2026-09-13 2425 阅读

The oil in the workshop makes the floor slippery with just one step, and work injury compensation is unaffordable. The safety shoes' soles are not sufficiently oil-resistant and anti-slip, so foot protection is just empty talk.

The workshop floor is slippery with just one step, and work injury compensation is unaffordable.

The soles of safety shoes are the 'part that protects the feet from being crushed': wear-resistant, oil-resistant, and non-slip. The material should be wear-resistant, oil-resistant, and non-slip—conclusion first: using TPU for safety shoe soles is mainstream; for regular work, TPE offers better cost performance.

The biggest pitfall of safety shoe soles: if the gloss is off, check the mold temperature first. If the gloss is abnormal, check the mold temperature first; don't rush to blame the material— the order of troubleshooting determines the efficiency of troubleshooting.

The sole of safety shoes is a safety component: wear-through or oil seepage are hidden dangers. Choosing the right material ensures workers' safety — it's a safety component, don't skimp on material costs.

Why are safety shoes inclined towards TPU?

Reasons for using TPU for safety shoe soles: good wear resistance, oil resistance possible, slip resistance possible, high strength — all four combined, suitable for safety shoes.

Wear resistance is key: friction in the workshop. Write the wear test into acceptance — if it wears through, it's a problem.

Oil resistance cannot be compromised: oily environment. Oil resistance testing should be included in the acceptance—if it leaks oil, that's a problem.

Workshop oil and anti-smash, three checkpoints

Workshop conditions: Daily friction. Wear resistance data needs to be tested — if it wears through, that's the problem.

Oil contamination condition: oily environment. Oil resistance data must be tested—oil seepage, that's the problem.

Anti-smash working condition: heavy objects falling. Strength data must be checked—deformation is the problem.

TPU or rubber? How to choose safety shoes

DimensionTPURubber
Wear-resistantStrongGood
Oil-resistantCan be donemiddle
Non-slipGoodGood
CostMedium-highMedium-high
WeightmiddleHeavy
Efficiencyinjection moldingVulcanization

Table reading: Rubber is good for non-slip but heavy, moderately oil-resistant; TPU is wear-resistant and oil-resistant, and efficient — for safety shoe soles, TPU is mainstream.

Choose according to working conditions: oily TPU, slippery rubber.

Safety Shoe Acceptance: Two Accounts of Oil Resistance and Slip Resistance

PhenomenonCausesCountermeasures
Glossy PoorLow Mold TemperatureMold Heating Temperature
Gloss BrightHigh Mold TemperatureMold Temperature Lowering
Uneven GlossUneven Mold TemperatureAdjusting Cooling
Gloss DriftBatch FluctuationBatch Verification

Table Reading: Check mold temperature, material temperature, and back pressure in three steps; gloss issues should start with the process first.

Gloss is a mirror of craftsmanship.

Starting with strange material, three pitfalls

Pit One: Strange material. As soon as gloss issues arise, replace the material; actually, a 10°C mold temperature difference takes up time—first check the process.

Pit 2: Oil resistance and leak test. Oil seepage—oil resistance test, mandatory.

Pit 3: Anti-smash and omission test. Deformation—strength test, mandatory.

Choose safe shoe materials, pass these three hurdles first

Three questions: What wear resistance standard, oil resistance according to oil, and what grade for anti-smash resistance. First inspection: Actual operation test—three questions and one inspection, supplier background is clear.

Inspection and verification must come first: adjust mold temperature before drawing conclusions, then negotiate price—inspection order determines inspection efficiency.

Make sampling a habit: keep samples for each batch, retest wear and oil resistance by batch. Compare materials for batch changes before scaling up—batch stability, fewer customer complaints.

Safety shoe sole Shore A 80-90, oil resistance level should be inspected by 24 hours of actual oil soaking. Engine oil, diesel, and lubricating oil corrode differently; don't use the same oil to report all data.

TPU High wear and oil resistance efficiency; rubber has good slip resistance but is heavy and vulcanized. Oil stain workshop TPU, slippery floor rubber—choose by working conditions, not by price tier.

If the gloss is incorrect, first check the mold temperature; don't rush to blame the material. Low mold temperature shows dark gloss, high mold temperature makes the gloss bright. Only when the process inspection sequence is correct is the material not wasted.

Safety shoe acceptance is first soaked in oil for 24 hours, then bending at -30°C for core cold storage. Anti-smash steel head combined with testing, material certification verified according to labor protection grade.

Oil resistance soak test and -40°C bend without cracks; safety shoe wear and oil seepage complaints resolved. Each batch retained for oil resistance testing and low temperature reproduction, gloss reproduced according to mold temperature window.

Safety Shoe Soles Common Issues and Countermeasures Table

PhenomenonCausesCountermeasures
Wear and WearInsufficient Wear ResistanceChange wear-resistant material
Oil seepageInsufficient oil resistanceChange oil-resistant material
Poor glossLow mold temperatureMold temperature increase
DeformationInsufficient anti-smashSwitch to high-strength material
Low temperature crackingLow temperature resistance weakSwitch to low-temperature resistant material

Safety shoes oil resistance After soaking in engine oil for 24 hours, volume change <5% accepted. Engine oil, diesel, and lubricating oil have varying degrees of corrosion; all data from one oil report is just a mess—soak according to the actual oil quality in the workshop,

don't just use standard oil.

Safety shoes with anti-smash steel toe are used for acceptance after impact 20J if the steel toe does not collapse. Sole material and steel toe are two separate accounts;

The sole can't wrap the steel head and the impact energy disperses — whole shoe testing is harder than single-sheet testing.

Safety shoe anti-slip inspection is based on wet steel plate friction coefficient ≥0.15, with oil stain surfaces tested separately. Oil stain workshops have high anti-slip requirements for wet steel plates;

TPE sole adds anti-slip patterns to meet standards—wet and oil surfaces are tested separately, not reported together.

Cologne customer case: hardness batch drift, small-batch trial production underwent low-temperature bending

A shoe material factory in Hangzhou, safety shoe sole hardness batch drift, the feel fluctuates between soft and hard. Cologne cooperated with small-batch trial production for validation before scaling up, passing -40°C low-temperature bending on the first try. Small-batch trial production locked drift before mass ramp-up—batch issues should have been exposed during trial production.

Summary

Safety shoe sole selection: process check first, wear resistance then test; if gloss doesn't match mold temperature, check first and don't rush to blame parts.

"Can domestic products replace imports?" — we hear this phrase every week.

Most can, but not just "can" or "can't" in just two sentences. High-temperature resistance, precision parts, and long-term aging have clear boundaries: if you force it outside the boundary, problems will arise.

Ningbo Kelong New Materials Co., Ltd. produces modified thermoplastic elastomers, modified nylon (PA6 / PA66 / PA46 / PA11 / PA12 / PA6T / PA9T and nylon alloys), modified PPO / PPS, as well as nylon resins, sub-brand materials, and large bulk materials from major chemical giants in stock.

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