How to Manufacture Straws: A Step-by-Step Guide

Commercial straw manufacturing starts with two decisions: what material you want to use and what the finished straw needs to look like.

If you are working with materials such as PLA, PBAT, PHA, or PP, you will typically form the straw by heating the material and pushing it through a shaped die to create a continuous hollow tube, a process known as extrusion. Paper straws follow a different route. Instead of melting material, you bond several narrow layers of paper and spiral-wind them into a tube.

From there, the manufacturing process depends on whether you are producing a straight straw, a flexible straw, a specialty format, or a product that must be wrapped or packed before sale.

How Are Drinking Straws Manufactured?

There are two main commercial manufacturing routes for drinking straws.

Extruded straws usually begin as pellets or granules. You prepare the material, heat it until it can be formed, push it through a die to create a continuous hollow tube, cool that tube, and cut it to the required length.

Paper straws start with narrow strips of paper. You apply adhesive between the layers, wind the paper around a forming mandrel to create a continuous tube, allow the bond to set sufficiently, and then cut the tube into individual straws.

In simple terms:

Extruded straws: Material preparation → Tube forming → Cooling → Cutting

Paper straws: Paper preparation → Gluing and winding → Setting → Cutting

Those stages create the basic straight straw. Depending on the finished product you are making, you may still need bending, specialty forming, inspection, counting, wrapping, group packing, or carton packing.

What Should Be Defined Before Straw Production Begins?

Before you select equipment or begin production, define the finished straw.

At minimum, you should know the raw material, inner and outer diameter, length, wall thickness or paper construction, number of colors if relevant, finished design, and packaging format.

Those details affect almost every production stage.

Diameter determines the size of the tube you need to form. Length determines how the continuous tube will be cut. Material determines whether you are using extrusion or paper winding and what operating conditions the process requires.

The finished design matters just as much. If you are making a flexible straw, the straight tube needs another forming stage after extrusion and cutting. If every straw must be individually wrapped, packaging becomes part of the production line rather than a separate afterthought.

A practical approach is to work backward from the product you intend to sell. Once that product is clear, the required manufacturing sequence becomes much easier to define.

How Are PLA and Other Extruded Straws Manufactured?

If you are producing PLA, PBAT, PHA, PP, or another suitable extrudable material, the core process is continuous tube extrusion.

A PLA straw making machine typically combines material feeding, extrusion, cooling, hauling, cutting, and collection into one coordinated production line.

1. Prepare the Raw Material

Extrusion starts with the material, usually supplied as pellets or granules.

Before you feed it into the machine, make sure it is in the correct condition for processing. This is particularly important with moisture-sensitive materials such as PLA.

Excess moisture can contribute to bubbles, rough surfaces, inconsistent extrusion, and reduced finished-straw strength. You should follow the drying recommendations for the specific resin grade rather than applying one temperature and drying time to every PLA formulation.

If the straw requires color or other approved formulation components, you also prepare those materials at this stage.

2. Feed and Heat the Material

Once prepared, the material enters the extruder.

Inside the heated barrel, the material moves forward while heat and mechanical movement gradually soften, melt, and mix it. By the time it reaches the forming section, it needs to be sufficiently uniform to flow continuously.

The exact operating conditions depend on the material you are processing. PLA, PP, and biodegradable compounds do not necessarily use identical temperature profiles or machine settings.

You do not need the polymer to be as hot as possible. You need it to reach a stable condition that allows continuous forming without incomplete melting or unnecessary thermal degradation.

3. Form the Continuous Straw Tube

The softened material is then pushed through the straw-forming die.

Unlike a solid extrusion, the die creates a hollow cross-section. The material flows around the central forming area and exits as one continuous tube rather than as separate straws.

At this point, you have created the basic straw geometry, but the product is still hot and dimensionally vulnerable.

Its final diameter and wall characteristics depend not only on the die but also on material output, internal air control, pulling speed, and what happens during cooling.

4. Cool and Stabilize the Straw

The newly formed tube needs to lose enough heat to retain its shape.

It normally passes through a controlled cooling section while the line continues moving it forward. During this stage, you are trying to stabilize the diameter, roundness, straightness, wall shape, and surface appearance.

If the straw stays too soft for too long, downstream pulling forces can distort it. If cooling is inconsistent, you can also see dimensional variation from one section of the tube to another.

The objective is therefore not simply to make the straw cold. You want consistent cooling that allows the tube to become dimensionally stable before later stages put additional mechanical force on it.

5. Pull and Cut the Straw to Length

The extruder produces one continuous tube, so you still need to turn that tube into individual straws.

A haul-off system pulls the formed tube through the line at a controlled rate. The cutting system then divides it into predetermined lengths.

Those lengths depend entirely on the product. You may be producing short beverage straws, standard drinking straws, longer straws, or straight tubes intended for subsequent flexible-section forming.

Cutting consistency matters because irregular lengths create problems beyond appearance. They can affect counting, automatic feeding, individual wrapping, and other downstream operations.

Once the tube has been cut, you have the basic individual straight straw.

Is PLA Straw Manufacturing Different From PP Straw Manufacturing?

PLA and PP follow the same broad production route:

Feeding → Heating → Extrusion → Cooling → Cutting

The difference lies in how you manage the material during those stages.

PLA generally requires closer attention to moisture preparation and processing temperature. PP has its own suitable processing conditions, while PBAT- and PHA-based compounds can require settings specific to the formulation being used.

The machinery may follow a similar physical layout, but the operating recipe should be matched to the actual material grade.

How Are Paper Straws Manufactured?

Paper straw manufacturing does not use extrusion because you are not melting the raw material.

Instead, you combine narrow strips of paper into a multi-layer tube using adhesive and spiral winding.

The finished product may perform the same basic function as an extruded drinking straw, but the manufacturing route is fundamentally different.

1. Prepare the Paper

Paper straw machines need strips of paper in the correct widths for the tube you intend to produce.

You can either buy paper that has already been slit into suitable rolls or purchase larger rolls and slit them in-house.

Ready-slit material simplifies the production setup because it removes a paper-preparation stage. In-house slitting gives you more control over strip widths and raw-material preparation but requires additional equipment and factory space.

The paper construction can also vary depending on the required straw diameter, strength, paper grade, thickness, and number of layers.

Before production begins, make sure the prepared strips match the intended straw construction.

2. Feed the Paper and Apply Adhesive

Several paper strips are fed simultaneously toward the forming section.

Food-contact adhesive is applied between the layers so they can bond into one tube. Adhesive application needs to be controlled because too little can create weak bonding and loose seams, while excessive or poorly distributed adhesive can interfere with forming and finished quality.

Because drinking straws come into direct contact with beverages, the materials and substances used in food-contact applications need to be suitable for their intended use in the market where you sell the product. Food-contact regulation can cover polymers, paper, adhesives, colorants, and other substances used in finished food-contact articles. 

You should therefore select your paper, adhesive, inks, coatings, and other formulation components according to the applicable food-contact requirements rather than simply choosing materials based on machine compatibility.

3. Spiral-Wind the Paper Into a Tube

After adhesive application, the strips are wound around a forming mandrel.

The paper layers overlap as they travel around the mandrel, creating a continuous multi-layer tube with the required diameter.

The winding stage needs to keep the layers properly aligned while maintaining consistent tube geometry. Poor alignment can affect diameter, straightness, bonding, or wall construction.

At this point, the individual paper layers have been transformed into one continuous straw tube, but the adhesive still needs enough time to establish a secure bond.

4. Allow the Bonded Tube to Set

The bonded paper needs sufficient setting or drying for the layers to remain securely joined.

How that happens depends on the machine configuration, adhesive, paper, line speed, and production setup.

You do not want the tube to reach cutting or handling stages while the bonded layers are still unstable. The aim is to establish enough integrity for the tube to remain intact during cutting, collection, and subsequent packaging.

5. Cut and Collect the Paper Straws

Once formed, the continuous paper tube is cut into individual lengths.

The cutting system needs to maintain consistent length and clean edges without crushing or deforming the tube. It also has to keep up with the normal winding speed of the line.

Finished straws can then be collected for inspection or transferred into whatever downstream process your product requires.

How Are Flexible Straws Made?

A flexible drinking straw usually begins as a straight straw.

After the tube has been extruded, cooled, and cut, the individual straw enters another machine that forms the corrugated section that allows it to bend.

The basic production sequence is:

Straight straw → Feeding → Flexible-section forming → Collection → Inspection or packing

A straw bending machine automates this secondary forming stage.

During bending, you need to control where the flexible section appears, how long the corrugated area is, and whether the straw maintains its overall shape and tube integrity.

This illustrates an important point about straw manufacturing: the straight tube is not always the finished product. It may simply be the starting point for the next manufacturing stage.

What Happens After a Straw Is Formed?

Once the straw itself exists, you still have to prepare it for whatever happens next.

For some products, that may be simple bulk collection. For others, it can involve automated inspection, feeding, wrapping, counting, and carton packing.

Inspection

Before packaging, you should confirm that the straw meets the required product specification.

Typical checks include length, diameter, straightness, surface appearance, and cut quality. You should also remove visibly damaged or deformed products.

For flexible straws, inspect the consistency and position of the flexible section. For paper straws, bonding quality and tube integrity are particularly important.

Counting and Handling

High-speed production also creates a handling challenge.

Once hundreds of straws are leaving the forming process every minute, they need to be collected and transferred without creating a bottleneck.

Depending on the degree of automation, the straws may be aligned, counted, accumulated temporarily, or automatically fed into another machine.

This stage becomes especially important when you are connecting extrusion or paper forming directly to downstream equipment. The next machine needs to receive the product at a rate it can actually handle.

Packaging

The final packaging format depends on how you sell or supply the straw.

You may package straws loose in bulk, wrap them individually, create counted group packs, or place them into boxes or cartons.

A straw packing machine can automate individual or group packaging depending on the product format.

Packaging capacity should be considered when you design the production line. If your straw-forming machine produces more units than the packing equipment can consistently handle, packaging becomes the bottleneck even though the forming machine itself is operating correctly.

Where Does Quality Control Fit Into Straw Manufacturing?

Quality control should run through the manufacturing process rather than appear only at the end.

If you wait until packaging to discover a dimensional or bonding problem, you may already have produced a large quantity of unusable material.

The exact standard you apply depends on your customer specifications, intended market, straw material, food-contact requirements, and relevant local regulations.

The useful approach is to identify where each important defect can first be detected and check it there rather than allowing the problem to move further down the line.

Conclusion

Straw manufacturing changes mainly according to the material you use and the finished product you want to sell. PLA, PP, PBAT, PHA, and similar materials are formed through extrusion, while paper straws are produced by bonding and winding multiple paper layers into a tube.

In either route, forming the tube is only part of the process. Cooling or setting, accurate cutting, secondary forming, inspection, handling, and packaging all determine whether that tube becomes a consistent, saleable straw.

Define your finished product first, then build the manufacturing flow around its material, dimensions, output, and packaging requirements. That gives you a production line in which each stage supports the next rather than creating unnecessary bottlenecks.

Contact us to share your straw specifications and target capacity to configure the right production setup.

Frequently Asked Questions

What materials are used to manufacture drinking straws?

Drinking straws can be made from PP, PLA, PBAT- or PHA-based compounds, paper, and other suitable materials. The material determines the forming process and the operating conditions needed during production.

What is extrusion in straw manufacturing?

Extrusion is the process of heating an appropriate material until it can be formed and continuously pushing it through a shaped die. In straw manufacturing, the die creates a hollow tube that is then cooled and cut into individual lengths.

How are PLA straws manufactured?

PLA straws are generally made by preparing and drying the resin, feeding it into an extruder, heating and forming it into a continuous hollow tube, cooling the tube to stabilize its dimensions, and cutting it into individual straws. Further bending or packaging may follow.

How are paper straws manufactured?

Paper straws are made by preparing narrow paper strips, applying adhesive between several layers, spiral-winding them around a forming mandrel, allowing the bond to set, and cutting the continuous paper tube into individual straw lengths.

How are flexible drinking straws made?

A flexible straw usually begins as a straight straw. After the straight tube is formed and cut, a separate forming process creates the corrugated section that allows the straw to bend.

What machines are needed to manufacture straws?

The equipment depends on the material and finished product. An extruded straw line typically requires material feeding, extrusion, cooling, hauling, cutting, and collection. Paper production uses paper feeding, adhesive application, winding, cutting, and collection. You may also need bending, feeding, wrapping, or packing equipment depending on the finished straw.