Content Paragraph: Shandong Zibo Jintai Roll Co., Ltd (JTrolls) combines decades of metallurgical expertise with advanced CNC engraving technology to produce biscuit dough rollers that perform flawlessly under continuous industrial operation. We don't just supply metal cylinders; we provide engineered surfaces that optimize dough rheology and release properties.
Our product range covers the critical stages of the biscuit forming line:
- Dough Sheeting & Gauging Rolls: Designed with high surface hardness and strict concentricity to ensure uniform dough sheet thickness for crackers and hard biscuits.
- Rotary Moulding Rolls: Featuring custom CNC engraving on food-grade bronze or steel shells, delivering intricate designs with sharp definition for soft cookies and shortbreads.
- Rotary Cutting Rolls: Engineered for precision and edge retention, ensuring clean cuts and separation for hard biscuit shapes without deformation.
- Whether you are producing soda crackers, digestive biscuits, or complex sandwich cookies, JTrolls delivers the food-grade rollers that major global brands trust.
Content: At JTrolls, we understand that a biscuit roller is more than just a machine part—it is a food-contact surface that requires strict hygiene and metallurgical stability. We control every variable in the manufacturing process to ensure premium quality.
- Food-Grade Metallurgy: We strictly utilize certified food-grade materials to ensure safety and compliance.High-Grade Carbon Steel & Alloy Steel: Selected for sheeting and cutting rolls to provide high tensile strength and impact resistance.Lead-Free Bronze: Used for premium rotary moulds, offering excellent natural dough release properties and superior thermal conductivity.Chilled Cast Iron: For applications requiring extreme surface hardness and wear resistance.
- Advanced CNC Engraving: Unlike traditional casting methods that may lack definition, our rotary moulds are processed using multi-axis CNC engraving centers. This digital manufacturing process ensures:Sharp Pattern Definition: Complex designs and logos are reproduced with micron-level accuracy.Uniform Cavity Volume: Ensures every biscuit has the exact same weight, reducing raw material waste and ensuring consistent baking.
- Hygienic Surface Treatments: To solve the common headache of "dough sticking," we offer specialized surface treatments including Hard Chrome Plating and PTFE (Teflon) Coatings. These finishes create an ultra-smooth, non-porous surface that allows for easy cleaning and effortless dough release, even with sticky high-sugar formulations.
We engineer JTrolls biscuit rollers to strict metallurgical standards to match your specific production stage—from dough feeding to final cutting.
| Grade / Material | Key Characteristics | Recommended Application |
| High-Grade Carbon Steel (e.g., 45# / 1045) | Excellent machinability and toughness; Cost-effective solution. | Dough Feeding Rolls, Support Rolls |
| Alloy Steel (e.g., 42CrMo / 4140) | High tensile strength and impact resistance; Suitable for high-load cutting edges. | Rotary Cutting Rolls (Hard Biscuits), Heavy-duty Sheeting Rolls |
| Chilled Cast Iron (LTC / NCC) | Extremely hard surface (wear-resistant) with a softer core; Naturally non-stick. | Gauging Rolls, Final Sheeting Rolls, Laminating Rolls |
| Lead-Free Bronze / Brass | Superior dough release properties; Allows for the finest engraving detail. | Rotary Moulding Rolls (Soft Cookies, Shortbreads) |
| Food-Grade Polymer / Nylon | Lightweight; Non-corrosive; Gentle on conveyor belts. | Apron Rolls, Auxiliary Drive Rolls (Custom request only) |
| Parameter | Specification Range / Standard |
| Diameter Range | Ø 150 mm – Ø 600 mm (Customizable up to [Insert Max Dia]) |
| Face Length | Up to 2500 mm (Matches all standard conveyor widths) |
| Surface Hardness | • Steel Rolls: HRC 50 – 58 (Hardened & Tempered) • Chilled Iron: HS 68 – 75 • Bronze: HB 180 – 220 |
| Surface Finish (Ra) | Ra 0.4 μm (Fine Grinding) to Ra 0.1 μm (Mirror Polish/Chrome Plated) |
| Engraving Depth | 0.5 mm – 5.0 mm (Depending on biscuit design) |
| Concentricity / Run-out | ≤ 0.02 mm (Critical for uniform biscuit weight) |
| Dynamic Balance | G2.5 / G6.3 (ISO 1940 Standard) for high-speed operation |
| Surface Treatment | Hard Chrome Plating, Electroless Nickel, Teflon (PTFE) Coating |
Sticky dough leads to machine downtime and deformed products. Our rolls feature advanced surface treatments, including Hard Chrome Plating and Food-Grade PTFE (Teflon) coatings, tailored to your specific dough moisture and sugar content.
- The Benefit: Drastically reduces production stoppages for cleaning and ensures perfectly shaped biscuits, even with difficult, sticky formulations.
Running an older line without original drawings? No problem. We can reverse-engineer your existing worn-out roller or simply take a physical biscuit sample to recreate the exact mould design digitally.
- The Benefit: You get a drop-in replacement that fits your existing bearing housings and drive gears perfectly, eliminating the need for expensive machine modifications.
