Line planning GUIDE 02
Choosing a jam and marmalade line starts with the fruit's final form
Compare jam and marmalade lines through fruit form, raw material supply, vacuum cooking, filling compatibility, utilities and realistic product changeovers.
The defining question in a jam or marmalade project is how the fruit should appear in the finished product. A preserve containing fruit pieces and a smooth marmalade need different preparation and filling decisions. Fresh or frozen supply, cooking, transfer and packaging must be considered together. Start the enquiry with actual product examples and the intended fruit structure rather than choosing equipment by capacity alone.
Using the same fruit does not make jam and marmalade identical equipment applications. FRUMAK distinguishes products containing whole fruit or pieces from marmalade with a puréed structure. An early preparation operation can alter the form that the finished jar is supposed to retain.
Before discussing vessel sizes, describe what the customer should see in the jar. That description provides a practical basis for reviewing preparation, cooking, sampling, transfer and filling.
Separate piece retention from purée preparation
A strawberry jam with visible pieces and an apricot marmalade should not automatically use an identical preparation route. Record incoming fruit size, stone condition and target structure. For stone fruit, ask specifically what the separation method does to the flesh.
FRUMAK states that its stone brushing machine changes the fruit's form and should not be confused with equipment that removes stones while preserving the whole fruit. Share incoming fruit, intermediate material and a finished-product sample together. This prevents a visually attractive jar from becoming the only technical description in the enquiry.
Specify fresh and frozen supply as separate scenarios
FRUMAK identifies fresh and frozen fruit options within its jam and marmalade range. Treat these as distinct incoming conditions in the project brief. Preparation, storage interfaces and the point where material enters the quoted scope need to be clear. If both supply routes will be used, explain when and how the business expects to switch between them.
| Scenario | Priority | Question for the proposal |
|---|---|---|
| Strawberry jam with pieces | Fruit structure through preparation and transfer | Which sample represents the required finished form? |
| Apricot marmalade | Stone separation and purée preparation | How will the intermediate product be evaluated? |
| Frozen fruit supply | Incoming material and storage interface | Where does the equipment supplier's scope begin? |
| Several jar sizes | Filling and closure changeover | Which adjustments and parts are required for each jar? |
Treat the vacuum vessel as equipment, not a universal recipe
FRUMAK describes its vacuum vessel for cooking and concentration under reduced pressure, with a steam jacket, sampling without breaking vacuum and discharge after processing. These are useful operating features to discuss. They do not establish one processing result for every fruit and formulation.
Agree which recipe the operator selects, where samples are taken and which information is recorded. Product-specific settings and quality requirements must be validated by the responsible process and food engineering team.
Match filling technology to the actual product
FRUMAK distinguishes volumetric filling, which can also handle products containing pieces, from its flowmeter alternative, which is not intended for particulate products. That distinction matters directly in jam production. Review the product sample, jar opening and required filling range together rather than assuming every filler handles every preserve.
Ask about product changeovers as well as nozzle count. Moving to a larger jar is a different task from changing fruit piece size. Include representative products in the acceptance plan rather than selecting only the easiest formulation to fill.
Put utilities and cleaning into the production schedule
Share the available electricity, steam, water, drainage and other relevant site services. Identify the boundary between building services and supplied equipment. The presence of a utility does not establish that it meets the selected machine's requirements; suitability needs engineering confirmation. Request connection and service-access drawings alongside the layout.
Cleaning and changeovers should appear as named operations in the production day. Include preparation, cooking, filling, cleaning, packaging adjustment and the next product start. Ask which activities can overlap and which must follow one another. Instead of an unverified fixed cleaning duration, review access, removable components and the operating procedure.
Keep fruit input, added recipe ingredients and product sent to filling as separate measurement points. A capacity figure needs a named product, formulation and measurement location. This allows suppliers to be compared against the same task rather than against numbers that describe different parts of the process.
Bring an example production day to the technical meeting
Show the first product, the next product and the packaging sequence on a short schedule. Discuss whether filling is ready when cooking ends, whether intermediate holding is required and what happens while one section is being cleaned. This reveals line interaction more clearly than independent nominal ratings.
Complete the brief with fruit specifications, finished-product samples, packaging, building information and site services. Identify the most demanding product in the intended range. The useful purchasing question is how the agreed line will manufacture that product under the defined operating conditions.
KEY POINTS
Before requesting a quotation
- Define fruit structure separately for jam and marmalade.
- Assess filling with the real product and jar.
- Include utilities, cleaning and changeovers in capacity discussions.
QUESTIONS AND ANSWERS
Frequently asked questions
Can one line make both jam and marmalade?+
The project can be evaluated for both, but fruit structure, preparation and filling requirements must be considered separately. List the fruit varieties and intended final form.
Is flowmeter filling suitable for jam containing fruit pieces?+
FRUMAK's current description excludes particulate products from its flowmeter option. Discuss its volumetric alternative using actual product and packaging samples.
Does vacuum cooking use one setting for every recipe?+
No common setting should be assumed. Fruit, formulation, loading and target properties require product-specific process validation.
Sources and product information
The following pages document product specifications and equipment scope. Capacity, product suitability and the final supply scope need to be agreed in a project-specific proposal.
- FRUMAK Jam and Marmalade Production Line
- FRUMAK Vacuum Cooking Vessel
- FRUMAK Filling Machine
- FRUMAK Stone Brushing Machine
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