HPL Hot-Pressing Paper

Product Brief
High-strength plant fiber: modified treatment with specialized pulping; high-temperature-resistant fiber: proprietary process for superior thermal resistance; papermaking: produced on a hybrid forming paper machine; slitting & packaging: online removal of static electricity and dust, surface finishing, in-line quality inspection, moisture-proof and shock-resistant packaging.

Update Time:08-20-2026

Visit Volume:43

Product Inquiry +86 18802120426

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Detailed introductionProduct Inquiry

I. Manufacturing Process

➢ High-Strength Plant Fiber: Modified treatment with specialized pulping process.

➢ High-Temperature-Resistant Fiber: Proprietary process achieving superior thermal resistance performance.

➢ Papermaking: Produced on a hybrid forming paper machine.

➢ Slitting & Packaging: Online removal of static electricity and dust, surface finishing, in-line quality inspection, moisture-proof and shock-resistant packaging.

II. HPL Dedicated Thermal Press Paper vs. Traditional Kraft Paper

➢ Our company specializes in the development and manufacturing of buffer materials for the lamination process in the High ➢ Pressure Laminate (HPL) industry. Compared with traditional kraft paper laminating materials, our product features the following.

➢ Utilizes premium plant fibers, modified specialty fibers, and a unique forming process.

➢ Provides stable and sustained buffering pressure with excellent resilience. Allow 12 hours of rest before reuse for significantly improved rebound elasticity.

➢ Heating rate is comparable to kraft paper, with uniform temperature transfer.

➢ Operating temperature 160°C, pressure 75 kg, 40 min per cycle; reusable for >100 cycles (depending on specific customer lamination conditions).

➢ No linting or powder shedding during the lamination process.

➢ No adhesion to steel plates and no inter-sheet bonding during lamination. Please ensure proper moisture-proof treatment before use; otherwise, anti-blocking performance will be significantly reduced.

➢ Significantly reduces per-cycle overall lamination cost, improves production efficiency, and reduces labor intensity for on-site personnel.

➢ Available grammage: 160 g/m², 210 g/m², 240 g/m², 350 g/m²; customizable upon request.

III. Technical Specifications of Thermal Press Paper

Item	Unit	Value
Nominal basis weight	g/m²	160	210	240
Deviation of basis weight (machine direction)	g/m²	±5	±7	±8
Deviation of basis weight (cross direction)	g/m²	±5	±7	±5
Thickness	mm	0.28	0.36	0.42
Thickness deviation	mm	±0.03	±0.03	±0.04
Density	g/cm³	0.56-0.58	0.56-0.58	0.56-0.58
Tensile strength (KN/m)	machine direction	6	7	8
Tensile strength (KN/m)	cross direction	4	5	6
Dirt count (0.2~0.7mm)	pcs/m²	≤10	≤10	≤10
Dirt count (0.8~1.0mm)	pcs/m²	≤1	≤1	≤1
Air permeability	ml/min	400-600	300-500	200-400
Moisture at delivery Max.	%	≤8	≤8	≤8
Deviation of finished product size	mm	±5	±5	±5

IV. Heating Rate Comparison (First Lamination Cycle)

Material	Basis weight (g/m²)	Set heating rate (°C/min)	Actual heating rate (°C/min)
Kraft paper	2580	1.73	2.58
Hot-pressing paper	2400	1.80	2.45
Test result	In the first pressing, with a 7% lower basis weight, the hot-pressing paper heated up about 5% slower.

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