A little bit of "know-how" - What kind of tube should be used in packaging?
Proper selection of closures in packaging plays a very important role in the process of its use. If each piece fits together, the packaging is airtight and functional, it will certainly give the consumer almost a 100% product consumption. One of the most important aspects of completing the package is the proper selection of the length of the closure tube (dispenser, atomizer, washer, etc.) relative to the bottle. To do this, measure the inside height of the bottle from the edge of the neck to its bottom, using the depth gauge, and read the result in millimetres. The length obtained is optimal for the tube to be placed directly in the bottle. Measure the length of the tube by measuring its length from the gasket in the closure nut (visible deepest from where the tube goes out) until it is completed. In case we want the tube to be slightly bent and in contact with the bottom edge of the bottle and its bottom, we can add a few millimetres (depending on bottle parameters) to the above described measurement and check whether the length is correct or if it should be corrected. In case the bottle is not transparent, it is possible to cut a small window into the bottle wall, just above its bottom and organoleptically evaluate the correctness of the measurement to facilitate this process.
The tube placement depends on the manufacturer's decision and the visual effect he/she wants to obtain. Most bottles have a slightly concave bottom (viewed from the outside) and a straight tube closure that meets the highest part of the bottom of the bottle looks better but does not allow the media to drain completely as its residues remain in the bottom recesses. Using a slightly curved tube, the end of which will come in contact with the edge of the bottom of the bottle or the deepest point on the bottom of the bottle will allow the product to be used almost in 100%. It is important to note that the bending of the tube cannot be too strong. You cannot allow it to break or bend upwards, as this can limit your full dose or even completely make the application of the medium impossible.
At this point it is worth mentioning about the material from which the tubes can be made. The most popular and most commonly used material is LDPE (low density polyethylene). The tube made of it is stable but capable of forming and light bending. The second type of polyethylene (PE) used for tube production is HDPE (high density polyethylene). This material is harder and less transparent than previously discussed. PP tubes (polypropylene) are characterized by the highest stiffness and deformation resistance. They are used most often in sprayer or dispenser products at the customer's request.
Another very important point in the selection of the tube is the proper shape of the cut of its end. A tube cut at right angles to the bottom of the bottle is definitely the wrong solution. In this case, it contacts the bottom of the bottle with its entire surface, which can lead to the application being blocked. The tube can also be cut under the slant. This method is safer, but there is still the risk that when the tube moves, it can come into contact with the wall of the bottle in such a way that it will seal the tube and stop the dosing. The third most popular and safest type of termination is the so-called "dovetail". The end of the tube looks like the letter "V", whose two ends only point in contact with the bottom of the bottle, which guarantees a free intake of the medium during use. It should be noted that the tubes can also be colour-coded so that they can be matched to the individual design and provide a visual added value to the entire package.
An important aspect is also the choice of the right diameter of the tube to the density of the medium that is contained in the package. Too little tube diameter can cause us not to reach full dosage or the application will not be possible at all, but ... about it the next time.
Feel free to visit us!
We are living in a time when information appears in an instant and it circles the world even faster. We are flooded by news coming from each and every direction, some of which is so-called 'fake news', i.e. untrue information, the purpose of which is to be sensational, cause outrage, controversy or generate traffic to the website on which it was published. It is up to us to separate truth from falsehood, because official refutation either does
Let‘s meet us on CosmeticBusiness - International trade fair of cosmetics supplying industry in Munich, Germany.
This spring trade fair in Warsaw is an opportunity every year to meet our regular customers, to get to know new companies and to establish interesting business contacts. It gives us an opportunity to present our new products and the entire spectrum of ways in which they can be modified, something that is of vital importance to us!
Let’s meet at the trade show in Warsaw!
On 2nd and 3rd April, the Warsaw exhibition and trade centre EXPO XXI is hosting another annual Packaging Innovations event. Our team will be waiting for you in the Green Hall at stand A11.
Another spring is around the corner, and we are all taking off our heavy clothes to be able to enjoy the sun, which is getting warmer every day.
Does all packaging have the chance of a second life?
We look forward to seeing at our stand!
So little is needed to reveal beauty.
We would like to thank all our Clients and Partners for their trust and we sincerely wish you a happy Christmas with your family.
In response to the countless discussions and books that address the present condition of our natural environment, all kinds of measures and solutions that address the problem are proposed, some of which do not even require much effort and can be implemented by just about anyone.
Minimalist lifestyle: what does zero waste mean?
IMPORTANT! Longer order fulfilment times
Thank you for coming to the fairs.
The pollution of our oceans, seas, rivers and forests is a topic that each of us encounters daily. Despite how much the issue is discussed, the countless conversations and conferences on it, it is still difficult to deal with it effectively. So, it is worth stressing how crucial it is that absolutely every single inhabitant of our planet is committed to tackling it. The every day choices and decisions of each individual not only have specific
Autumn is always a busy time in the packaging business, with numerous industry events to attend. This year is no different. Those interested in cosmetics packaging products and closures are in for a treat with a number of important events, where they will be able to see the latest and the most innovative developments in the field
A major part of it is plastic and unfortunately a lot of it is still stored in landfills. Recycling and ecology are recently one of the main topics discussed internationally, primarily because of the fact that waste production is a growing issue. How does that all relate to packaging products? Has the present situation been caused by plastics as such, or is the consumers' missing awareness to blame?
Packaging products suitable for pharmacy shelves
Protection, safety, hygiene of application – these are the essential features of a good packaging product
Cosmetic tubes – stylish and elegant in their simplicity
“Fine feathers make fine birds”, or fashion and trends in packaging design.
Thank you for coming to Cosmetic Business!
Have you checked out the new products in our permanent range yet?
Polpak Packaging invites you to CosmeticBusiness 2018!
Impress your customer with… your packaging!
Thank you for participating in Packaging Innovations fair!
Airless packaging solutions for special assignments.
Happy Easter !
We would like to invite you to the Packaging Innovations International Trade Show.
Airless packaging – calculating the print area.
We are expanding the range of products available on stock.
How to measure the dip tube length with a ruler – quickly and simply.
Refresh the image of your product!
Polpak Packaging for Christmas!
From the series: A little „know-how” – How to choose an optimum dosing mechanism for the product?
Big possibilities of a small packaging closure.
A little bit of "know-how" - What kind of tube should be used in packaging?
Interesting application of closures and packaging in food industry.
Already in the second half of October new products will appear in regular distribution in Polpak Packaging. This time we are offering you two new models of trigger sprayers and one model of foam sprayer.
15 September – Day of Packaging
Danish Beauty Award 2017 - packaging and cosmetics nominated for an award!!!
Made for each other – how to choose the packaging for a cosmetic product?
Natural, ecological and innovative cosmetics – current trend in cosmetic industry.
Make cleaning a pleasure!
Thank you for visiting Polpak Packaging at the Cosmetic Business fair!
New products from Polpak Packaging on Cosmetic Business fair 2017!
Cosmetic Business 2017 - Invitation
Spring releases in Polpak Packaging offer!
Invitation to Packaging Innovations fair 2017