Rounded Clear Plastic Bottle, Type B, Silver Disc Top, 300 ml

A clear 300 ml PET bottle with a silver disc top cap makes a ready-to-use set for liquid and medium-thick cosmetic products that are dispensed by squeezing the bottle: shower gels, shampoos, conditioners, body lotions and liquid soaps. The clear plastic shows the colour of the contents, and you can see at a glance how much product is left. PET is lightweight and does not break when dropped, so it suits the shower, travel and sales in larger quantities, where glass is harder to handle.

The cap has a silver aluminium shell, a PP interior and a white disc centre. The 24/410 neck finish is the same on the bottle and the cap, so you simply fill the bottle and tighten the cap. Both the bottle and the cap are declared suitable for contact with cosmetic products. The set is intended for cosmetics and does not have a food-contact certificate.

How a disc top cap works

A disc top opens when you press one side of the disc. The other side lifts and uncovers the dispensing opening. The product flows out when you squeeze the bottle, and the amount depends on how hard you squeeze. Pressing the raised side back down closes the opening. Everything can be done with one hand and without unscrewing the cap, which is useful for products used with wet hands.

Dispensing behaviour depends on the consistency of the contents. Gels, shampoos and lotions flow evenly from the opening. Very thin, watery liquids tend to run out of an open disc even without squeezing, and they drip when the bottle is turned upside down. Thick creams and masks are difficult to push through a small opening, so other closures with the same neck are more suitable for dispensing them.

Nominal volume and filling headspace

The nominal volume is the amount the bottle is intended to hold under normal filling. The physical volume up to the brim of the neck is larger. The difference serves as a headspace for the cap and for the expansion of the contents when the temperature changes. It also allows you to squeeze the bottle without the product running out as soon as the disc is opened. For this reason, fill the bottle up to the nominal volume, not to the brim.

What the set is suitable for

• Shower gels and liquid soaps – one-handed dispensing and an unbreakable bottle are an advantage in the shower, and the viscosity of gels suits the opening of the disc top.
• Shampoos and conditioners – medium-thick products flow out evenly, and the disc can be pressed back down after use so that water does not get into the bottle.
• Body lotions and thinner emulsions – as long as they can be squeezed out of the bottle, the disc top dispenses them without unscrewing; for thicker creams, we recommend testing a sample first.
• Massage and body oils – PET is commonly used for oil-based products. Oils flow easily, so close the opening firmly after use and transport the bottle upright when travelling.

Before the first filling and reuse

Before first use, wash the bottle in warm water with a cleaning product, rinse it thoroughly, disinfect it with isopropyl alcohol (IPA) or ethanol and leave it to dry completely upside down. Rinse the cap with the disc open so that the water also passes through the dispensing channel, and leave it to dry in the same way. Fill the dry packaging only with a product that has cooled down.

The set can be used repeatedly. When refilling, remove any residue of the old product, which would encourage the growth of microorganisms in the new filling. Check the thread and the disc hinge to make sure the cap still seals.

Good to know

• Light – clear PET does not block light. Store products with light-sensitive ingredients away from direct sunlight, or choose dark packaging for them.
• Heat – do not leave the bottle near a heat source or in the sun in a car, as the contents expand and the plastic softens.
• Aggressive substances – PET is not intended for concentrated essential oils, undiluted fragrance compositions or solvents. Finished cosmetic products with normal usage rates are not usually a problem, but for an unusual composition we recommend testing on a single bottle.
• Other closures – you can find closures with a 24/410 neck and other ready-made bottle and closure combinations in the Handymade range. If you combine them yourself, we recommend checking the seal, the dispensing and the behaviour of the packaging with your specific formulation.
• Recycling – the bottle is made of PET and belongs in plastics. The cap combines aluminium with PP, so separate it from the bottle before disposal.

Frequently asked questions